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Geoff Hartlieb
P
ATH
2026 season
- GP
- 18
- W-L
- 2-1
- ERA
- 4.82
- WHIP
- 1.57
- K
- 22
- IP
- 28.0
Game log
| Date | Opp | Result | Dec | IP | H | ER | BB | K |
|---|---|---|---|---|---|---|---|---|
| Sep 27 | vs HOU | L 0-9 | - | 1.2 | 3 | 1 | 1 | 1 |
| Sep 25 | vs HOU | W 6-5 | - | 0.1 | 1 | 3 | 2 | 1 |
| Sep 23 | vs LAA | W 7-3 | W | 1.2 | 1 | 0 | 1 | 2 |
| Sep 19 | @CLE | L 6-12 | - | 1.0 | 2 | 1 | 0 | 2 |
| Sep 17 | @TB | L 1-10 | - | 1.2 | 0 | 0 | 0 | 2 |
| Sep 13 | vs SEA | W 8-7 | - | 2.0 | 1 | 0 | 0 | 2 |
| Sep 8 | vs TOR | L 2-4 | - | 2.0 | 1 | 0 | 1 | 2 |
| Sep 5 | @SEA | W 6-2 | - | 1.0 | 2 | 1 | 0 | 2 |
| Sep 4 | @SEA | W 7-6 | - | 1.1 | 0 | 0 | 0 | 1 |
| Sep 2 | @TEX | W 9-2 | - | 2.0 | 2 | 0 | 0 | 1 |
| Jul 26 | @MIN | L 8-11 | - | 2.0 | 5 | 3 | 0 | 1 |
| Jul 24 | @MIN | W 2-0 | - | 0.1 | 0 | 0 | 3 | 1 |
| Jul 21 | @AZ | L 5-6 | - | 0.1 | 0 | 1 | 2 | 0 |
| Jul 19 | vs WSH | L 2-5 | - | 2.0 | 1 | 0 | 1 | 1 |
| Jun 30 | vs LAD | L 3-9 | - | 3.0 | 6 | 3 | 1 | 1 |
| Jun 27 | @LAA | L 2-5 | L | 0.2 | 2 | 1 | 0 | 0 |
| Jun 25 | @SF | W 9-6 | W | 2.0 | 0 | 0 | 1 | 1 |
| Jun 20 | vs LAA | L 0-7 | - | 3.0 | 3 | 1 | 1 | 1 |
Latest news
The Athletics outrighted Hartlieb to Triple-A Las Vegas on Thursday.
The move clears a spot on the 40-man roster. Hartlieb got into 18 games for the Athletics this season, logging a 4.82 ERA and 22:14 K:BB over 28 frames. The 32-year-old has been outrighted before, so Hartlieb could choose to decline the assignment and become a free agent.
RotoWire via ESPN · Oct 29
The Athletics selected Hartlieb's contract from Triple-A Las Vegas on Wednesday.
Hartlieb has authored a 6.08 ERA and 6:9 K:BB over 13.1 innings covering eight outings with the Athletics this season, but he's pitched well in a tough environment in Las Vegas, posting a 3.35 ERA and 53:15 K:BB in 48.1 frames. He'll give the A's a fresh bullpen arm.
RotoWire via ESPN · Sep 2
The Athletics outrighted Hartlieb to Triple-A Las Vegas on Wednesday.
Hartlieb has the ability to decline the outright assignment and elect free agency, but he already accepted an outright assignment earlier this month and could do so again. The reliever has allowed nine runs with a 6:9 K:BB over 13.1 frames during his time with the Athletics this season.
RotoWire via ESPN · Jul 30
Hartlieb was designated for assignment by the Athletics on Sunday, Jason Burke of Roundtable.io reports.
Hartlieb had his contract selected from Triple-A Las Vegas on July 18, surrendering four runs on six hits and six walks while striking out three batters over 4.2 innings in four appearances with the big-league club following his promotion. The team acquired right-handed reliever Scott Blewett from the Cardinals on Sunday, and he'll replace Hartlieb on the 40-man roster. If Hartlieb goes unclaimed on waivers, he'll likely report to Triple-A Las Vegas.
RotoWire via ESPN · Jul 27
The Athletics selected Hartlieb's contract from Triple-A Las Vegas on Saturday.
With Justin Sterner (knee) headed for the injured list, the A's will turn to Hartlieb to provide depth to their bullpen. The 32-year-old righty will presumably be limited to middle-relief duty after giving up five earned runs in 8.2 innings during a stint with the big club in late June.
RotoWire via ESPN · Jul 18
Hartlieb cleared waivers Saturday and was outrighted to Triple-A Las Vegas by the Athletics.
Hartlieb was DFA'd by the Athletics on Friday, but he will stay in the organization in Triple-A. He has spent the majority of the 2026 season with Las Vegas, where he has a 3.48 ERA, 1.39 WHIP and 41:10 K:BB across 33.2 innings (16 games, three starts).
RotoWire via ESPN · Jul 4