Sean Manaea

34-Year-Old PitcherRP

New York Mets

2026 Stats

W-L

0-0

ERA

4.50

WHIP

1.44

Rest-of-Season Projections

W-L

ERA

WHIP

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2026 Fantasy Outlook

Manaea's followup season to a successful debut with the Mets was mostly awful. The one shining light was a 24.0% K-BB%, which is a career best for him, but it only came over the course of 60.2 innings and a nasty case of gopheritis with Manaea allowing 13 homers in that limited time. He dealt with an oblique injury earlier in the season and then pitched through loose bodies in his elbow once he returned from that with the help of a cortisone injection midsummer. It was still up in the air whether Manaea would require surgery to remove those loose bodies this winter, which is understandably upsetting for Mets fans and fantasy managers. It would only take one of those bodies moving to a nerve or a ligament and start rubbing the wrong way to put Manaea back in an all-too-familiar situation for him. He is an intriguing upside play in the endgame, but we would feel a lot better recommending him if we knew where those loose bodies were in his elbow. Read Past Outlooks

RANKS

Rest of Season

Dynasty

From Preseason

#300

ADP

League Majors

Bats L

Throws L

40 Man Yes

Height 6'5"

Weight 245

DOB 2/1/1992

Born Valparaiso, IN

College Indiana State

Drafted 2013 KC

Staying in bullpen for now

PNew York Mets

April 8, 2026

Mets manager Carlos Mendoza said Wednesday that Manaea will remain in the team's bullpen for the time being, Anthony DiComo of MLB.com reports.

Analysis
The Mets are in the midst of nine straight games without an off day, and Mendoza had mentioned previously that he would use this stretch to insert a sixth starter into the rotation. However, he feels good about where his starting five is at, so the Mets will keep the status quo for now. Manaea has made two relief appearances this season, allowing just one run with a 4:4 K:BB over five innings of work.

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Pitching Stats

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2026 MLB Game Log

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Pitching Appearances Breakdown

Average Pitch Count

Last 10 Games

Last 5 Games

How many pitches does Sean Manaea generally throw?

1-10

11-20

21-30

31-40

41-50

51-60

61-70

71-80

81-90

91-100

101-110

111-120

121+

1-10

11-20

21-30

31-40

41-50

51-60

61-70

71-80

81-90

91-100

101-110

111-120

121+

1-10

11-20

21-30

31-40

41-50

51-60

61-70

71-80

81-90

91-100

101-110

111-120

121+

What part of the game does Sean Manaea generally pitch?

1st

2nd

3rd

4th

5th

6th

7th

8th

9th

Extra

1st

2nd

3rd

4th

5th

6th

7th

8th

9th

Extra

1st

2nd

3rd

4th

5th

6th

7th

8th

9th

Extra

% Games Reaching Innings Threshold

% Games By Number of Innings Pitched

Left/Right Pitching Splits

Since 2024

-16%

BAA vs RHP

2026

-12%

BAA vs LHP

2025

Even Split

2024

-23%

BAA vs RHP

	BAA	Batters	K	BB	H	2B	3B	HR
Since 2024vs Left	.250	245	68	12	57	7	2	9
Since 2024vs Right	.210	826	203	70	155	34	0	27
2026vs Left	.235	18	4	1	4	0	1	1
2026vs Right	.267	52	8	6	12	3	0	1
2025vs Left	.258	69	17	0	17	2	1	1
2025vs Right	.257	194	58	12	45	9	0	12
2024vs Left	.248	158	47	11	36	5	0	7
2024vs Right	.190	580	137	52	98	22	0	14
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Home/Away Pitching Splits

Since 2024

-8%

ERA at Home

2026

-69%

ERA at Home

2025

-29%

ERA at Home

2024

-15%

ERA on Road

	ERA	WHIP	IP	W	L	SV	K/9	BB/9	HR/9
Since 2024Home	3.89	1.02	134.1	8	4	0	9.9	2.3	1.4
Since 2024Away	4.21	1.27	124.0	6	6	0	8.9	3.4	1.1
2026Home	2.16	1.20	8.1	0	0	0	8.6	4.3	0.0
2026Away	7.04	1.70	7.2	0	0	0	4.7	3.5	2.3
2025Home	4.73	1.08	32.1	2	1	0	10.0	1.4	1.9
2025Away	6.67	1.38	28.1	0	3	0	12.4	2.2	1.9
2024Home	3.75	0.98	93.2	6	3	0	10.0	2.5	1.3
2024Away	3.17	1.19	88.0	6	3	0	8.2	3.8	0.7
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Stat Review

How does Sean Manaea compare to other relievers?

This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.

* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.

K/BB

1.71

K/9

6.8

BB/9

3.9

HR/9

1.1

Fastball

89.3 mph

ERA

4.50

WHIP

1.44

BABIP

.297

GB/FB

0.86

Left On Base

74.3%

Exit Velocity

83.1 mph

Barrels/BBE

7.1%

Spin Rate

2013 rpm

Balls Hit 95+ MPH

30.4%

Swinging Strike

8.7%

Advanced Pitching Stats

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Defensive Stats

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Stats Vs Today's Lineup

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Past Fantasy Outlooks

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

Manaea was good for his first 20 starts last season, putting up a 3.74 ERA, 1.25 WHIP and 101:45 K:BB over 106 innings. Then, after watching a Chris Sale start and deciding he'd try to emulate Sale's lower arm slot, Manaea really took off over his final 12 outings, collecting a 3.09 ERA, 0.85 WHIP and 83:18 K:BB across 75.2 frames. The new arm slot allowed Manaea's sinker to play better at the top of the zone, and he also found the strike zone more consistently, cutting his walk rate from 10.1 percent to 6.2 percent. A pitcher elevating his ceiling rarely happens in their 30s, but when it does it's usually because of a tangible change like Manaea made. It will cost fantasy managers more in 2025 to find out whether he can carry over his late-season success. There's also no change of scenery to consider since he re-signed with the Mets on a three-year, $75 million deal.

A trip to Driveline last offseason helped Manaea unlock more velocity, with the 93.6 mph he averaged with his four-seamer in 2023 representing more than a two-mph jump from 2022. He also had a 25.7 percent strikeout rate which was just a hair off his career high. Manaea's bottom-line results were uneven, though, due in part to a walk rate that climbed for a third straight year to a career-worst 8.4 percent. The left-hander also never seemed to settle into his hybrid role with the Giants, as he was used as a starter, bulk reliever and short reliever at various points. Manaea did finish strong after being used as a traditional starter in his final four appearances, which might have convinced him to exercise the opt-out clause in his contract. There's a path to mixed-league relevancy if Manaea lands in a good situation, particularly if his velocity gains hold. That said, Manaea has rarely been a consistent fantasy option in his career.

The Padres acquired Manaea from the A's after the end of the lockout in March 2022, but he delivered a disappointing season with a career-worst 4.96 ERA and was briefly dropped from the rotation in September. He gave up 29 home runs with a 14.9 percent HR/FB and also saw his groundball rate dip below 40 percent for the first time in his big-league career. Manaea got a two-year, $25 million deal with the Giants, which is a good landing spot and a sizable enough contract for us to feel confident in his role. Oracle Park is one of the five best parks at suppressing home runs, so that could make Manaea a strong home-streaming option. His changeup and slider each showed promising characteristics, so if he can dial back his fastball usage (61% last season), he could have a nice rebound in 2023.

One can take away many positives and negatives when examining Manaea's 2021 campaign. While logging a career-high 179.1 innings, the southpaw conceded a career-worst 1.25 HR/9 despite seeing his K% shoot up to 25.7%. Even though he ditched his four-seamer entirely in favor of a sinker, Manaea's average fastball velocity rose nearly two mph to 92.2 while his groundball rate dropped to 42.0%. His 3.65 FIP shined his campaign in a better light than his 3.91 ERA, in large part because of the opposition hitting .318 on balls in play against him. The lefty's offspeed deliveries proved to be effective, with hitters slashing just .213 against his slider and .239 against his changeup. Assuming he's able to stay healthy, Manaea shouldn't have a problem eclipsing 150 innings during his age-30 season, but it's hard to envision him establishing more than the middle-of-the-rotation presence that he's held for the vast majority of his career.

Through four starts last season, Manaea was sitting on a 9.00 ERA and 1.87 WHIP. However, a .462 BABIP, 46.2 LOB% and 4.19 xFIP in those 15 frames begged for patience. Sure enough, the lefty spun a 2.95 ERA and 0.95 WHIP the rest of the way, with a 3.62 xFIP over 39 innings during that stretch. Manaea's career strikeout rate is a pedestrian 19.7%, capping his ceiling and exposing him to the whims of variance as we saw last season. A 6.1 BB% and 44.6% groundball mark help keep his ratios in check. Manaea's bread and butter is a sinker, but it only generates a 7% swinging-strike rate while his lesser-used changeup, curveball and slider all generate double-digit rates. A tweak in Manaea's repertoire could manifest in more punchouts without hurting other areas. After his disappointing 2020, most are off Manaea, creating a potential buying opportunity in fantasy drafts.

Manaea's 2018 was truncated by shoulder surgery, which was initially expected to keep him out for all of 2019. However, rehab proceeded well and the lefty returned when rosters expanded. When he finally made it to the hill, the Athletics didn't baby him as Manaea started five games, throwing 29.2 innings. He responded with a 1.21 ERA and 0.78 WHIP, earning the start in the AL Wild Card Game. Ignore the actual results; the important thing is Manaea was able to average nearly six innings a start, boding well for his fantasy potential in 2020. The southpaw's velocity and spin were down a tick, but that's to be expected after such a long layoff. Not to mention, he relies more on command and control and doesn't feature a curve while only throwing sliders about 20% of the time. Temper expectations to around 150 innings, but there's little reason to think Manaea can't pick up where he left off in 2018.

Manaea's 2019 season is very much in doubt after he had major shoulder surgery in late September. He has seen his average fastball velocity drop off nearly four miles per hour over the past three seasons and has had noticeable velocity dips in each of the past two second halves. He held batters to a .212/.264/.376 line before the All-Star break this past season, even no-hitting the eventual World Series champs, but 18 home runs allowed in 123 innings pushed his ERA up to 3.42 when it was all said and done. He allowed fewer homers (4) in the 37 innings he pitched after the break, but his opponents' slash line jumped to .286/.325/.414. If your league allows you to draft injured players and stash, Manaea is in the mix as he has shown signs of being worth it to do that. Just understand that you may not get a single pitch from him this year and we will not know more about his shoulder until late February.

Manaea came into 2017 wanting to tighten up his slider so it was not as loopy and overexposed to righties. He did use the pitch more in 2017, and early on it helped. Manaea hit the All-Star break with a 3.76 ERA, 1.21 WHIP and 24.0 percent strikeout rate. He limped to the finish line last season, posting a 5.23 ERA, 1.67 WHIP and 15.4 percent strikeout rate. That drop in strikeouts is alarming from season-to-season let alone within a single season. He did not lose too much velocity off his fastball (92.1 to 91.7), but he was quite hittable over the summer including an outing against Baltimore where he never got a second out while allowing six earned runs. When Manaea is dealing, it is fun to watch, but the lack of consistency right now dampens the appeal of his upside.

Success is all about making adjustments. Manaea built on his flawed first half (5.24 ERA in 12 starts) to become a stud during the second half of the season (2.67 ERA in 13 games, 12 starts). He improved across the board, and Manaea saved his best work for the final month of the season: four starts, 24 innings, a 1.13 ERA and 20:5 K:BB. The A's were careful with his workload: Manaea threw more than 100 pitches in just five of his 24 starts, and he was capped at 106 pitches in a game. His best offering in the first half was his changeup, which he threw just 23.1 percent of the time, but he upped the usage to 31.5 percent in the second half and thrived. The slider also showed inseason improvement, and his ability to mix the secondary offerings to batters on both sides of the plate will be a key aspect of his development. This combination of improvement and upside makes him an intriguing fantasy sleeper.

Manaea was the top chip acquired by the A's in the trade deadline deal that sent Ben Zobrist to Kansas City. The lefty will be 24 in February and was the 34th overall pick in the 2013 draft. He impressed right away after the trade, putting up a 1.90 with a 10.76 K/9 over seven starts at Double-A Midland. After dominating in the 2012 Cape Cod League, there was some talk before the 2013 draft that Manaea had a chance to go No. 1 overall, but injuries and poor performance caused him to slide to 34th. Manaea sits in the low 90's with his fastball and also features a plus slider that all comes with a deceptive delivery. The A's are very excited about Manaea and Billy Beane commented that Manaea is the type of guy he did not think would be obtainable at the deadline. Various minor injuries have slowed his momentum so far, but if he can stay healthy and pick up where he left off at the end of 2015, Manaea has a chance to join the A's before the 2016 season is complete.

Manaea put together a solid 25 starts in his first year at High-A Wilmington, posting a 3.11 ERA (supported by a 2.79 FIP) and a K/9 of 10.8. Some questions about his health caused his stock to slip a bit in the 2013 first-year player draft, but he was able to return from hip surgery and toss 121.2 innings during his age-22 season. The 6-foot-5 southpaw mixes a mid-90s fastball with an above-average slider, and also has a changeup in his arsenal. That combination of weapons prevented left-handed hitters in the Carolina League from homering off him in 2014, as Manaea was able to limit them to a .211 batting average. The sky is the limit for Manaea, who certainly has potential to rise quickly though the minor league ranks in the coming season. He'll look to build off the momentum generated from a strong second half, a period in which he limited opposing batters to a .180 average and posted a 1.01 WHIP over 73.1 innings.

Manaea was the Royals's second pick (34th overall) in the 2013 draft out of Indiana State University. Many experts originally suggested Manaea could have been a No. 1 overall pick, but the immediate need for hip surgery, a problem that developed from overcompensating for an ankle injury during his delivery, saw him drop down many teams' draft boards. The 6-foot-5, 235 pound lefty has a solid three-pitch arsenal with a fastball clocked as high as 96 mph, and after successful surgery and rehab, is expected to be ready for spring training. He is expected to open the year either in Low-A Lexington or High-A Wilmington. Depending on his progress, he could be on the fast-track towards the major leagues, but not likely until 2015 or 2016. Dynasty league owners will want to keep him on their radar as he does project to be a solid middle-of-the-rotation starter down the road.

More Fantasy News

Effective in long relief Thursday

PNew York Mets

April 3, 2026

Manaea allowed one run on four hits and two walks over 3.2 innings of relief in Thursday's loss to the Giants. He struck out two.