Peter O'Brien
Outfielder · Career Stats, Bio & Records (2015-2019)
Peter O'Brien was an outfielder who played in Major League Baseball from 2015 to 2019 for the Arizona Diamondbacks and the Miami Marlins, a span of 5 seasons. In 72 career games, he hit .209 with 38 hits, 11 home runs, and 26 RBI.
- AVG (Batting Average):
- Hits divided by at bats. .300 is the traditional mark of an excellent hitter.
- HR (Home Runs):
- Hits on which the batter circled the bases and scored, almost always by clearing the outfield fence.
- RBI (Runs Batted In):
- Runs that scored as a direct result of a batter's plate appearance.
- OPS (On-Base Plus Slugging):
- On-base percentage plus slugging percentage, the quickest single summary of offensive value. .900 or better is star-level.
Data updated
- Position
- Outfielder
- Bats / Throws
- R / R
- Height / Weight
- 6'4" / 225 lb
- MLB Debut
- 2015-09-11
- Last Game
- 2019-05-09
Full name: Peter Robert O'Brien
Career Batting Statistics
| G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | OBP | SLG | OPS | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 72 | 182 | 17 | 38 | 8 | 0 | 11 | 26 | 1 | 16 | 73 | .209 | .275 | .434 | .709 | -66 |
Career AVG .209 vs. league average .252 across their career seasons — 17.3% below league average.
Career OBP .275 vs. league average .320 across their career seasons — 14.0% below league average.
Career SLG .434 vs. league average .417 across their career seasons — near league average.
Career OPS .709 vs. league average .736 across their career seasons — near league average.
Season-by-Season Batting
Click a stat to plot it across every season.
| Year | Team | Lg | G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | Lg AVG | Lg OBP | Lg SLG | Lg OPS | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2015 | ARI | NL | 8 | 10 | 1 | 4 | 1 | 0 | 1 | 3 | 0 | 2 | 5 | .400 | — | — | — | — | 0.0 |
| 2016 | ARI | NL | 28 | 64 | 6 | 9 | 1 | 0 | 5 | 9 | 0 | 3 | 27 | .141 | .255 (-45%) | .321 (-44%) | .417 (-6%) | .738 (-23%) | -261.3 |
| 2018 | MIA | NL | 22 | 66 | 8 | 18 | 5 | 0 | 4 | 10 | 0 | 7 | 22 | .273 | .247 (+10%) | .318 (+6%) | .409 (+30%) | .727 (+19%) | 195.4 |
| 2019 | MIA | NL | 14 | 42 | 2 | 7 | 1 | 0 | 1 | 4 | 1 | 4 | 19 | .167 | — | — | — | — | 0.0 |
| Career · 4 seasons | 72 | 182 | 17 | 38 | 8 | 0 | 11 | 26 | 1 | 16 | 73 | .209 | — | — | — | — | -66 | ||
Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.
Game Log & Splits
View full game log (72 games) →Per-game data from Retrosheet (regular season, through 2025).
Batting — Home / Away
| Split | G | AB | R | H | HR | RBI | AVG |
|---|---|---|---|---|---|---|---|
| Home | 34 | 75 | 4 | 16 | 4 | 12 | .213 |
| Away | 38 | 107 | 13 | 22 | 7 | 14 | .206 |
Last 10 Games — Batting
| Date | Tm | Opp | Res | AB | R | H | 2B | 3B | HR | RBI | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019-05-09 | MIA | CHC | L | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 2019-05-08 | MIA | CHC | L | 4 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2019-05-06 | MIA | CHC | W | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 2 |
| 2019-05-05 | MIA | ATL | L | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2019-05-04 | MIA | ATL | L | 3 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 1 |
| 2019-04-11 | MIA | CIN | L | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 2019-04-10 | MIA | CIN | L | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 2019-04-09 | MIA | CIN | L | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 |
| 2019-04-07 | MIA | ATL | L | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2019-04-06 | MIA | ATL | W | 3 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 |
Career Games by Position
Circle size = games played at each position.
| Position | Games |
|---|---|
| First Base | 19 |
| Left Field | 23 |
| Right Field | 12 |
Peter O'Brien: the record in brief
Peter O'Brien played a first major league game on September 11, 2015 and a last one on May 9, 2019. By club, O'Brien's seasons break down as the Arizona Diamondbacks (2015 through 2016) and the Miami Marlins (2018 through 2019). O'Brien played primarily as an outfielder and threw and hit right-handed. Born on July 15, 1990, in Hialeah, FL, USA, O'Brien was listed at 225 pounds on a 6-foot-4 frame. The given name on file is Peter Robert O'Brien.
In 72 games and 182 at bats, O'Brien batted .209 with 38 hits, plus 11 home runs and 26 runs batted in. On-base and slugging figures of .275 and .434 give O'Brien a career OPS of .709. Over the seasons O'Brien played, league hitters batted .252; the .209 career figure is 17.3% below that. No season topped the 18 hits of 2018. Among the seasons with the heaviest workload, the best average was .273 in 2018, 10% above that year's league mark of .247.
Frequently Asked Questions about Peter O'Brien
- What years did Peter O'Brien play?
- Peter O'Brien played in Major League Baseball from 2015 to 2019.
- Was Peter O'Brien a pitcher?
- No. Peter O'Brien was a position player (Outfielder).
- How many home runs did Peter O'Brien hit?
- Peter O'Brien hit 11 career home runs with 38 hits.
- What was Peter O'Brien's career batting average?
- Peter O'Brien batted .209 over his career, with 38 hits in 182 at bats.
- How many RBI did Peter O'Brien have?
- Peter O'Brien drove in 26 runs in his career.
- Is Peter O'Brien in the Hall of Fame?
- No. Peter O'Brien has not been inducted into the National Baseball Hall of Fame.