Geoff Hartlieb stats and game log
Geoff Hartlieb is the Oakland Athletics relief pitcher (No. 31). In the 2026 regular season through September 27, 2026, Geoff Hartlieb has played 18 games: 28.0 innings, 22 strikeouts and a 4.82 ERA.
Research summary
- Recent form: 1.6 strikeouts per game over the last 5 games, against 1.2 over the season (18 games).
- Role: 1.1 innings per game over the last 5 games, against 1.2 over the season.
- Consistency: at or above the season average (1.2 strikeouts) in 6 of 18 games.
- Home and road: 1.4 strikeouts per game at home (8 games), 1.1 on the road (10).
Figures are MLB regular-season games; samples are stated and small samples move quickly.
Team: Oakland Athletics stats and results.
6'5" · 240 lb
2026 regular season
| Games | IP | H | ER | BB | K | HR | PIT | |
|---|---|---|---|---|---|---|---|---|
| 2026 per game | 18 | 1.2 | 1.7 | 0.8 | 0.8 | 1.2 | 0.1 | 24.2 |
| 2026 totals | 18 | 28.0 | 30 | 15 | 14 | 22 | 1 | 435 |
2025 regular season
4 regular-season games in 2025 for comparison, played for DET and NYY. Playoff games are not in these figures.
| Games | IP | H | R | ER | BB | K | HR | HB | |
|---|---|---|---|---|---|---|---|---|---|
| 2025 per game | 4 | 0.2 | 2 | 2 | 2 | 1.5 | 1.3 | 0.5 | 0 |
| 2025 totals | 4 | 3.1 | 8 | 8 | 8 | 6 | 5 | 2 | 0 |
Rates in 2026
Geoff Hartlieb has pitched 28.0 innings in 18 games (0 starts) with 22 strikeouts and a 4.82 ERA.
| Measure | Value |
|---|---|
| ERA (earned runs per 9 innings) | 4.82 |
| WHIP (walks and hits per inning) | 1.57 |
| Strikeouts per 9 innings | 7.1 |
| Strikeout-to-walk ratio | 1.57 |
| Starts | 0 |
Home, road and recent form, 2026
| Split | Games | K/g | IP/g | ER/g |
|---|---|---|---|---|
| Home | 8 | 1.4 | 2.0 | 1 |
| Road | 10 | 1.1 | 1.1 | 0.7 |
| Last 5 games | 5 | 1.6 | 1.1 | 1 |
| Season | 18 | 1.2 | 1.2 | 0.8 |
Game log
| Date | Opponent | Result | IP | H | ER | BB | K | HR | PIT |
|---|---|---|---|---|---|---|---|---|---|
| Sep 27, 2026 | vs HOU | L | 1.2 | 3 | 1 | 1 | 1 | 0 | 27 |
| Sep 25, 2026 | vs HOU | W | 0.1 | 1 | 3 | 2 | 1 | 0 | 17 |
| Sep 23, 2026 | vs LAA | W | 1.2 | 1 | 0 | 1 | 2 | 0 | 24 |
| Sep 19, 2026 | @ CLE | L | 1.0 | 2 | 1 | 0 | 2 | 0 | 16 |
| Sep 17, 2026 | @ TB | L | 1.2 | 0 | 0 | 0 | 2 | 0 | 18 |
| Sep 13, 2026 | vs SEA | W | 2.0 | 1 | 0 | 0 | 2 | 0 | 25 |
| Sep 8, 2026 | vs TOR | L | 2.0 | 1 | 0 | 1 | 2 | 0 | 30 |
| Sep 5, 2026 | @ SEA | W | 1.0 | 2 | 1 | 0 | 2 | 0 | 22 |
| Sep 4, 2026 | @ SEA | W | 1.1 | 0 | 0 | 0 | 1 | 0 | 13 |
| Sep 2, 2026 | @ TEX | W | 2.0 | 2 | 0 | 0 | 1 | 0 | 26 |
Athletics teammates
- Alika Williams (SS)
- Brady Basso (RP)
- Brian Serven (C)
- Carlos Cortes (RF)
- Chris Roycroft (RP)
- Darell Hernaiz (SS)
- Denzel Clarke (CF)
- Donovan Walton (2B)
- Drew Rom (RP)
- Elvis Alvarado (RP)
- Gage Jump (SP)
- Hayden Juenger (RP)
- Henry Bolte (CF)
- Hogan Harris (RP)
- Hunter Bigge (RP)
- J.T. Ginn (SP)
- Jack Perkins (SP)
- Jacob Lopez (SP)
- Jeff McNeil (2B)
- Jeffrey Springs (SP)
- Jonah Heim (C)
- Jose Suarez (RP)
- Joshua Kuroda-Grauer (3B)
- Lawrence Butler (RF)
- Luis Medina (RP)
- Mason Barnett (RP)
- Max Muncy (3B)
- Michael Stefanic (2B)
- Scott Blewett (RP)
- Seth Johnson (RP)
- Shea Langeliers (C)
- Tommy White (1B)
- Zack Gelof (3B)
How to read these numbers
- Games are the games Geoff Hartlieb played.
- Season tables are regular-season games only. The game log includes playoff games, labeled, and reaches into last season when needed.
- A dash (–) means the statistic is not recorded for that game, never zero (hover it for the reason). A column with no recorded value is left out.
This page shows statistics and results only. It contains no sportsbook prices or betting lines. Current markets, hit rates against the line and StatsNext research are in the app.
Research in StatsNext
- Geoff Hartlieb in StatsNext: Player Research with splits, matchup context and current props
- Oakland Athletics stats and results
- Astros at Athletics, September 27, 2026
- Astros at Athletics, September 25, 2026
- Angels at Athletics, September 23, 2026
- All MLB player stats, 2026