Bob O'Brien
Pitcher · Career Stats, Bio & Records (1971)
Bob O'Brien was a pitcher who played in Major League Baseball in 1971 for the Los Angeles Dodgers. Across 14 career appearances, he went 2-2 with a 3.00 ERA and 15 strikeouts.
- W (Wins):
- Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
- ERA (Earned Run Average):
- Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
- SO (Strikeouts):
- For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
- WHIP (Walks and Hits per Inning Pitched):
- Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.
Data updated
- Position
- Pitcher
- Bats / Throws
- L / L
- Height / Weight
- 5'10" / 170 lb
- MLB Debut
- 1971-04-11
- Last Game
- 1971-07-07
Full name: Robert Allen O'Brien
Season-by-Season Pitching
Click a stat to plot it across every season.
| Year | Team | Lg | W | L | G | GS | CG | SHO | SV | IP | H | ER | BB | SO | ERA | Lg ERA | Pitcher PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1971 | LAN | NL | 2 | 2 | 14 | 4 | 1 | 1 | 0 | 42.0 | 42 | 14 | 13 | 15 | 3.00 | 3.47 (+14%) | -531.5 |
| Career · 1 season | 2 | 2 | 14 | 4 | 1 | 1 | 0 | 42.0 | 42 | 14 | 13 | 15 | 3.00 | — | -532 | ||
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.
Career Batting Statistics
| G | AB | R | H | 2B | 3B | HR | RBI | SB | BB | SO | AVG | OBP | SLG | OPS | PIV |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14 | 9 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .111 | .111 | .111 | .222 | 0 |
Career AVG .111 vs. league average .249 across their career seasons — 55.4% below league average.
Career OBP .111 vs. league average .317 across their career seasons — 64.9% below league average.
Career SLG .111 vs. league average .365 across their career seasons — 69.6% below league average.
Career OPS .222 vs. league average .682 across their career seasons — 67.4% below 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1971 | LAN | NL | 14 | 9 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .111 | — | — | — | — | 0.0 |
| Career · 1 season | 14 | 9 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .111 | — | — | — | — | 0 | ||
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 (28 games) →Per-game data from Retrosheet (regular season, through 2025).
Batting — Home / Away
| Split | G | AB | R | H | HR | RBI | AVG |
|---|---|---|---|---|---|---|---|
| Home | 9 | 6 | 0 | 1 | 0 | 0 | .167 |
| Away | 5 | 3 | 0 | 0 | 0 | 0 | .000 |
Pitching — Home / Away
| Split | G | IP | H | ER | BB | SO | ERA |
|---|---|---|---|---|---|---|---|
| Home | 9 | 29.2 | 31 | 11 | 8 | 12 | 3.34 |
| Away | 5 | 12.1 | 11 | 3 | 5 | 3 | 2.19 |
Last 10 Games — Batting
| Date | Tm | Opp | Res | AB | R | H | 2B | 3B | HR | RBI | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1971-07-07 | LAD | CHC | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-07-06 | LAD | CHC | L | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-06-29 | LAD | CHC | L | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-06-25 | LAD | SDP | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-06-21 | LAD | STL | W | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-06-16 | LAD | NYN | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-06-10 | LAD | PHI | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-06-02 | LAD | WSN | W | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-05-16 | LAD | SFG | W | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-05-09 | LAD | PIT | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Last 10 Games — Pitching
| Date | Tm | Opp | Dec | IP | H | R | ER | BB | SO | HR |
|---|---|---|---|---|---|---|---|---|---|---|
| 1971-07-07 | LAD | CHC | — | 1.0 | 4 | 2 | 2 | 0 | 1 | 0 |
| 1971-07-06 | LAD | CHC | L | 3.1 | 7 | 3 | 0 | 2 | 1 | 0 |
| 1971-06-29 | LAD | CHC | — | 6.1 | 8 | 2 | 1 | 0 | 0 | 0 |
| 1971-06-25 | LAD | SDP | — | 1.2 | 5 | 3 | 3 | 0 | 0 | 2 |
| 1971-06-21 | LAD | STL | W | 9.0 | 6 | 0 | 0 | 1 | 1 | 0 |
| 1971-06-16 | LAD | NYN | — | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971-06-10 | LAD | PHI | — | 2.0 | 1 | 0 | 0 | 0 | 1 | 0 |
| 1971-06-02 | LAD | WSN | W | 6.0 | 3 | 1 | 1 | 2 | 3 | 1 |
| 1971-05-16 | LAD | SFG | — | 0.1 | 0 | 0 | 0 | 1 | 0 | 0 |
| 1971-05-09 | LAD | PIT | — | 3.0 | 3 | 2 | 2 | 0 | 1 | 0 |
Career Games by Position
Circle size = games played at each position.
| Position | Games |
|---|---|
| Pitcher | 14 |
College History
| School Name | City | State | Years Attended |
|---|---|---|---|
| Fresno City College | Fresno | CA | 1968, 1969 |
Bob O'Brien: the record in brief
Bob O'Brien played a first major league game on April 11, 1971 and a last one on July 7, 1971. The team column never changes: it is the Los Angeles Dodgers in 1971. At 170 pounds on a 5-foot-10 frame, O'Brien is listed as a pitcher. O'Brien batted and threw left-handed, per the bio block. O'Brien was born on April 23, 1949, in Pittsburgh, PA, USA. Bob O'Brien was the playing name; the full given name is Robert Allen.
Across 14 games (4 starts), O'Brien recorded 2 wins against 2 losses with a 3.00 ERA. O'Brien had 15 strikeouts. The leagues O'Brien pitched in allowed 3.47 earned runs per nine over those seasons, so the career ERA was 13.5% better than average. O'Brien's only pitching season is 1971: 14 games, 15 strikeouts.
Every defensive appearance on record for O'Brien, 14 games, came at pitcher. The fielding table credits O'Brien with 1 putouts, 3 assists and 0 errors on the mound.
O'Brien's college years, 1968 and 1969, were spent at Fresno City College. The game-log section draws on 28 games of Retrosheet box scores for O'Brien.
Frequently Asked Questions about Bob O'Brien
- Was Bob O'Brien a pitcher?
- Yes. Bob O'Brien pitched in the major leagues, recording 2 wins and 15 strikeouts.
- How many home runs did Bob O'Brien hit?
- Bob O'Brien hit 0 career home runs with 1 hits.
- What was Bob O'Brien's career batting average?
- Bob O'Brien batted .111 over his career, with 1 hits in 9 at bats.
- What was Bob O'Brien's career ERA?
- Bob O'Brien finished with a 3.00 career ERA, going 2-2 with 15 strikeouts.
- How many strikeouts did Bob O'Brien have?
- Bob O'Brien recorded 15 career strikeouts.
- Is Bob O'Brien in the Hall of Fame?
- No. Bob O'Brien has not been inducted into the National Baseball Hall of Fame.