Colby Thomas

24-Year-Old OutfielderOF
Sacramento Athletics AAA
2025 Fantasy Outlook
Thomas isn't a perfect prospect, but he's big-league ready and has a chance to hit 20-plus homers with double-digit steals if he gets enough playing time as a rookie. He tallied 31 homers and 15 steals in 132 games split between Double-A and Triple-A. While his slash lines were similar and his ISO was almost identical at the two levels, Thomas' strikeout rate jumped from 18 percent at Double-A to 30.3 percent at Triple-A. His walk rate also jumped slightly from 6.5 percent to 7.3 percent, and the balls and strikes challenge system at Triple-A may have factored into both metrics going up. Given that Thomas was 23, what he did at Triple-A is more instructive for 2025 than what he did at Double-A, so don't expect him to hit north of .250. He's a quality defensive outfielder, capable of playing all three spots, and he bats right-handed, so Thomas could conceivably gain everyday playing time early this season. Read Past Outlooks
RANKS
Rest of Season From Preseason
#417
ADP
$Signed a $750,000 contract with the Athletics in July of 2022.
Returns to action over weekend
OFSacramento Athletics  AAA
March 24, 2025
Thomas (knee) played in Cactus League games Saturday and Sunday and went a combined 2-for-5 with a home run, an additional run and two RBI while playing 13 innings in left field.
ANALYSIS
Thomas' pair of appearances were his first since March 15, when he exited a game against the Rangers after taking a line drive off his right knee. The outfielder had already been reassigned to minor-league camp March 10, so the injury wasn't a factor in him not making the Opening Day roster. Thomas is expected to begin the 2025 season at Triple-A Sacramento.
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Batting Stats
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Minor League Left/Right Batting Splits (AAA)
Since 2023
 
 
+27%
OPS vs RHP
2025
 
 
+21%
OPS vs LHP
2024
 
 
+68%
OPS vs RHP
2023
No Stats
OPS PA R HR RBI SB AVG OBP SLG
Since 2023vs Left .752 130 5 18 .223 .323 .429
Since 2023vs Right .953 275 15 38 .297 .364 .589
2025vs Left .851 25 1 5 .364 11.000 .500
2025vs Right .702 66 2 6 .246 21.030 .456
2024vs Left .594 105 4 13 .189 30.010 .411
2024vs Right .996 209 13 32 .312 69.038 .630
2023vs Left 0 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0 0
Prospect Rankings History
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Additional Stats
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Defensive Stats
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X-rays negative on right knee
OFSacramento Athletics  AAA
Knee
March 15, 2025
X-rays came back negative on Thomas' right knee following Saturday's spring game against the Rangers, Jessica Kleinschmidt of TheComeback.com reports.
ANALYSIS
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Exits Saturday's game
OFSacramento Athletics  AAA
Knee
March 15, 2025
Thomas left in the sixth inning of Saturday's spring game against the Rangers due to a knee injury, Martin Gallegos of MLB.com reports.
ANALYSIS
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Excelling at Triple-A level
OFOakland Athletics  AAA
August 7, 2024
Thomas owns a .306 average and .979 OPS across 165 plate appearances over 37 games with Triple-A Las Vegas since being promoted to the affiliate June 18.
ANALYSIS
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Moves up to Triple-A
OFOakland Athletics  AAA
June 19, 2024
The Athletics promoted Thomas from Double-A Midland to Triple-A Las Vegas on Tuesday. He went 2-for-3 with a double and a run scored in his Las Vegas debut in Tuesday's 8-4 win over Tacoma.
ANALYSIS
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Drafted by Oakland
OFOakland Athletics  AAA
July 18, 2022
The A's have selected Thomas with the 95th overall pick in the 2022 first-year player draft.
ANALYSIS
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