Sam Antonacci

Sam Antonacci

23-Year-Old Second Baseman2B
Chicago White Sox
2026 Fantasy Outlook
After excellent runs at Double-A and in the Arizona Fall League, Antonacci looks like a future big leaguer, but he'll face stiff competition for playing time in the majors in 2026. Antonacci was selected by the White Sox in the fifth round in 2024 and received a $572,500 bonus out of Coastal Carolina. Despite the fact Antonacci has hit five home runs in 139 career games, he has been at least 50 percent better than the average hitter in every league he has played in, thanks to superb swing decisions and bat-to-ball ability. He had a 5.2 percent swinging-strike rate last year as an age-appropriate hitter at Double-A and his contact rates have always been elite. He predictably excelled in the hitter-friendly AFL, slashing .378/.505/.541 with three home runs, 11 steals and more walks (15) than strikeouts (11) in 19 games. Antonacci had 48 steals in 116 games last year, although his prolific base stealing is more the product of good reads and a lot of opportunities rather than plus speed. He figures to spend most of 2026 at Triple-A, with a big-league debut not out of the question. Read Past Outlooks
RANKS
Rest of Season From Preseason
#366
ADP
Signed a one-year contract with the White Sox in April of 2026.
Piling up multi-hit games
2BChicago White Sox
May 9, 2026
Antonacci went 2-for-4 with a run scored and an RBI on Friday against the Mariners.
Analysis
Antonacci contributed to the White Sox's rally in the third inning, singling in a run before also coming around to score. He singled four frames later to record his fourth multi-hit effort in his last seven games. In that span, Antonacci has hit .360 with three RBI, five runs scored and a stolen base.
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Batting Stats
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2026 MLB Game Log
2026
2026 MLB Game Log
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Batting Order Slot Breakdown
vs Right-Handed Pitchers
vs RHP
#1
#2
#3
#4
#5
#6
#7
#8
#9
4
1
9
vs Left-Handed Pitchers
vs LHP
#1
#2
#3
#4
#5
#6
#7
#8
#9
1
3
Left/Right Batting Splits
Since 2024
 
 
+158%
OPS vs RHP
2026
 
 
+158%
OPS vs RHP
2025
No Stats
2024
No Stats
OPS PA R HR RBI SB AVG OBP SLG
Since 2024vs Left .350 15 1 0 1 0 .083 .267 .083
Since 2024vs Right .903 63 9 1 8 1 .321 .413 .491
2026vs Left .350 15 1 0 1 0 .083 .267 .083
2026vs Right .903 63 9 1 8 1 .321 .413 .491
2025vs Left 0 0 0 0 0 0 0 0 0
2025vs Right 0 0 0 0 0 0 0 0 0
2024vs Left 0 0 0 0 0 0 0 0 0
2024vs Right 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Minor League Splits View Minor League Split Stats
Home/Away Batting Splits
Since 2024
 
 
+3%
OPS at Home
2026
 
 
+3%
OPS at Home
2025
No Stats
2024
No Stats
OPS PA R HR RBI SB AVG OBP SLG
Since 2024Home .817 30 5 0 4 0 .292 .400 .417
Since 2024Away .790 48 5 1 5 1 .268 .375 .415
2026Home .817 30 5 0 4 0 .292 .400 .417
2026Away .790 48 5 1 5 1 .268 .375 .415
2025Home 0 0 0 0 0 0 0 0 0
2025Away 0 0 0 0 0 0 0 0 0
2024Home 0 0 0 0 0 0 0 0 0
2024Away 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Stat Review
How does Sam Antonacci compare to other hitters?
This section compares his stats with all batting seasons from the previous three seasons (minimum 400 plate appearances)*. 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 and Barrels/PA % are benchmarked against 2019 data (min 400 PA) and Hard Hit Rate is benchmarked against last season's data (min 400 PA). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • BB/K
    Walk to strikeout ratio
  • BB Rate
    The percentage of plate appearances resulting in a walk.
  • K Rate
    The percentage of plate appearances resulting in a strikeout.
  • BABIP
    Batting average on balls in play. Measures how many of a batter’s balls in play go for hits.
  • ISO
    Isolated Power. Slugging percentage minus batting average. A computation used to measure a batter's raw power.
  • AVG
    Batting average. Hits divided by at bats.
  • OBP
    On Base Percentage. A measure of how often a batters reaches base. Roughly equal to number of times on base divided by plate appearances.
  • SLG
    Slugging Percentage. A measure of the batting productivity of a hitter. It is calculated as total bases divided by at bats.
  • OPS
    On base plus slugging. THe sum of a batter's on-base percentage and slugging percentage.
  • wOBA
    Weighted on-base average. Measures a player's overall offensive contributions per plate appearance. wOBA combines all the different aspects of hitting into one metric, weighting each of them in proportion to their actual run value.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Hard Hit Rate
    A measure of contact quality from Sports Info Solutions. This stat explains what percentage of batted balls were hit hard vs. medium or soft.
  • Barrels/PA
    The percentage of plate appearances where a batter had a batted ball classified as a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Expected BA
    Expected Batting Average.
  • Expected SLG
    Expected Slugging Percentage.
  • Sprint Speed
    The speed of a runner from home to first, in feet per second.
  • Ground Ball %
    The percentage of balls put in play that are on the ground.
  • Line Drive %
    The percentage of balls put in play that are line drives.
  • Fly Ball %
    The percentage of balls put in play that are fly balls.
BB/K
0.86
 
BB Rate
7.7%
 
K Rate
9.0%
 
BABIP
.293
 
ISO
.138
 
AVG
.277
 
OBP
.385
 
SLG
.415
 
OPS
.800
 
wOBA
.358
 
Exit Velocity
87.6 mph
 
Hard Hit Rate
32.2%
 
Barrels/PA
7.7%
 
Expected BA
.315
 
Expected SLG
.475
 
Sprint Speed
26.2 ft/sec
 
Ground Ball %
45.8%
 
Line Drive %
22.0%
 
Fly Ball %
32.2%
 
Prospect Rankings History
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Additional Stats
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Defensive Stats
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Stats Vs Upcoming Pitchers
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Recent RotoWire Articles Featuring Sam Antonacci See More
Recent RotoWire Articles Featuring Sam Antonacci See More
More Fantasy News
Two hits Friday
2BChicago White Sox
May 1, 2026
Antonacci went 2-for-4 with an RBI and a run scored Friday against the Padres.
Analysis
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Collects inside-the-park homer
2BChicago White Sox
April 21, 2026
Antonacci went 2-for-5 with a home run, a triple and three total RBI in an 11-5 win over the Diamondbacks on Tuesday.
Analysis
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Taking seat versus southpaw
2BChicago White Sox
April 19, 2026
Antonacci is out of the lineup for Sunday's game against the Athletics.
Analysis
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On base twice in debut
2BChicago White Sox
April 15, 2026
Antonacci went 1-for-3 with a walk and a run scored Wednesday against the Rays.
Analysis
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Starting at second base in debut
2BChicago White Sox
April 15, 2026
Antonacci will start at second base and bat fifth Wednesday versus the Rays in his major-league debut.
Analysis
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Latest Fantasy Rumors
Set to earn promotion?
2BChicago White Sox
April 13, 2026
Antonacci could get promoted to the White Sox's big-league roster in the near future, according to Ken Rosenthal of The Athletic.
Analysis
The White Sox traded Lenyn Sosa to the Blue Jays on Monday, and they needed depth in the infield. A promotion for Antonacci makes too much sense, especially since Chase Meidroth and Munetaka Murakami are playing almost every day on the right side of the infield. Antonacci is out to a quick start to the season with Triple-A Charlotte and could be rewarded with a move to the big-league roster in the near future.
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