Adam Oller
30-Year-Old
Free Agent Foreign
2025 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
Signs with KBO club
Oller has agreed to a contract with the KIA Tigers of the Korea Baseball Organization, Ari Alexander of KPRC 2 Houston reports.
ANALYSIS
Oller will likely slide into the rotation of the defending KBO champions. The 30-year-old right-hander has posted a 6.54 ERA over 36 appearances (23 starts) across parts of three seasons at the major-league level.
Oller will likely slide into the rotation of the defending KBO champions. The 30-year-old right-hander has posted a 6.54 ERA over 36 appearances (23 starts) across parts of three seasons at the major-league level.
Pitching Stats
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2024
2023
2022
Minor League Game Log
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Left/Right Pitching Splits
Since 2023
-14%
BAA vs RHP
2025
No Stats
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2023vs Left | .314 | 24 | 20 | 33 | 6 |
| Since 2023vs Right | .269 | 25 | 14 | 39 | 6 |
| 2025vs Left | 0 | 0 | 0 | 0 | 0 |
| 2025vs Right | 0 | 0 | 0 | 0 | 0 |
| 2024vs Left | .276 | 20 | 15 | 21 | 4 |
| 2024vs Right | .247 | 16 | 7 | 22 | 3 |
| 2023vs Left | .414 | 4 | 5 | 12 | 2 |
| 2023vs Right | .304 | 9 | 7 | 17 | 3 |
Home/Away Pitching Splits
Since 2023
-14%
ERA on Road
2025
No Stats
| ERA | WHIP | IP | K/9 | BB/9 | |
|---|---|---|---|---|---|
| Since 2023Home | 7.34 | 1.83 | 30.2 | 8.2 | 6.2 |
| Since 2023Away | 6.32 | 1.60 | 31.1 | 6.0 | 3.7 |
| 2025Home | 0 | 0 | 0 | 0 | 0 |
| 2025Away | 0 | 0 | 0 | 0 | 0 |
| 2024Home | 5.06 | 1.55 | 21.1 | 8.9 | 5.5 |
| 2024Away | 5.57 | 1.52 | 21.0 | 6.4 | 3.9 |
| 2023Home | 12.54 | 2.46 | 9.1 | 6.8 | 7.7 |
| 2023Away | 7.84 | 1.74 | 10.1 | 5.2 | 3.5 |
Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Becomes free agent
Oller elected free agency Friday, Ari Alexander of KPRC 2 Houston reports.
ANALYSIS
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Yields four runs in win
Oller (2-4) allowed four runs on eight hits and two walks over five innings Friday, striking out three and taking a loss against Toronto.
ANALYSIS
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Fans seven in no-decision
Oller came away with a no-decision in Saturday's 6-2 loss to Atlanta, giving up two runs on eight hits and two walks over 5.2 innings. He struck out seven.
ANALYSIS
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Loses again
Oller (1-4) took the loss Sunday against Washington, allowing three runs on six hits and two walks across five innings. He struck out two.
ANALYSIS
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Falls to Pirates
Oller (1-3) took the loss Tuesday against Pittsburgh, allowing six runs on seven hits and three walks over five innings. He struck out two.
ANALYSIS
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Latest Fantasy Rumors
Looking good with new slurve
Oller has impressed early on in Athletics camp after working on a new breaking ball at Dynamic Sports Training in Houston over the offseason, Martin Gallegos of MLB.com reports.
ANALYSIS
Oller describes his new breaking ball as more of a slider-curveball hybrid, or a slurve. Not only is his new pitch looking sharp, Oller is also showing improved command after uncharacteristically struggling in that area last season. "This is probably the best Adam has thrown the ball," manager Mark Kotsay said on Wednesday. "He looked really good. He looked confident. He threw strikes. From a naked-eye standpoint, his delivery looks like it's cleaned up. He's going north and south a lot more and a lot better." Oller is competing for a spot in the A's rotation after holding a 6.30 ERA and 46:39 K:BB over 74.1 innings in 2022.
Oller describes his new breaking ball as more of a slider-curveball hybrid, or a slurve. Not only is his new pitch looking sharp, Oller is also showing improved command after uncharacteristically struggling in that area last season. "This is probably the best Adam has thrown the ball," manager Mark Kotsay said on Wednesday. "He looked really good. He looked confident. He threw strikes. From a naked-eye standpoint, his delivery looks like it's cleaned up. He's going north and south a lot more and a lot better." Oller is competing for a spot in the A's rotation after holding a 6.30 ERA and 46:39 K:BB over 74.1 innings in 2022.