Bill Pierro
Pitcher · Career Stats, Bio & Records (1950)
Bill Pierro was a pitcher who played in Major League Baseball in 1950 for the Pittsburgh Pirates. Across 12 career appearances, he went 0-2 with a 10.55 ERA and 13 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
- R / R
- Height / Weight
- 6'1" / 155 lb
- Died
- 4/1/2006 in Brooklyn, NY, USA
- MLB Debut
- 1950-07-17
- Last Game
- 1950-09-19
Full name: William Leonard Pierro
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1950 | PIT | NL | 0 | 2 | 12 | 3 | 0 | 0 | 0 | 29.0 | 33 | 34 | 28 | 13 | 10.55 | 4.36 (-142%) | -963.3 |
| Career · 1 season | 0 | 2 | 12 | 3 | 0 | 0 | 0 | 29.0 | 33 | 34 | 28 | 13 | 10.55 | — | -963 | ||
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 13 | 9 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | .222 | .222 | .222 | .444 | 0 |
Career AVG .222 vs. league average .266 across their career seasons — 16.4% below league average.
Career OBP .222 vs. league average .346 across their career seasons — 35.8% below league average.
Career SLG .222 vs. league average .402 across their career seasons — 44.7% below league average.
Career OPS .444 vs. league average .748 across their career seasons — 40.6% 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1950 | PIT | NL | 13 | 9 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | .222 | — | — | — | — | 0.0 |
| Career · 1 season | 13 | 9 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | .222 | — | — | — | — | 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 (25 games) →Per-game data from Retrosheet (regular season, through 2025).
Batting — Home / Away
| Split | G | AB | R | H | HR | RBI | AVG |
|---|---|---|---|---|---|---|---|
| Home | 7 | 6 | 1 | 2 | 0 | 0 | .333 |
| Away | 6 | 3 | 0 | 0 | 0 | 0 | .000 |
Pitching — Home / Away
| Split | G | IP | H | ER | BB | SO | ERA |
|---|---|---|---|---|---|---|---|
| Home | 7 | 17.0 | 18 | 24 | 22 | 8 | 12.71 |
| Away | 5 | 12.0 | 15 | 10 | 7 | 5 | 7.50 |
Last 10 Games — Batting
| Date | Tm | Opp | Res | AB | R | H | 2B | 3B | HR | RBI | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1950-09-19 | PIT | BRO | L | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1950-08-29 | PIT | NY1 | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1950-08-22 | PIT | BRO | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1950-08-14 | PIT | CIN | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1950-08-12 | PIT | CHC | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1950-08-08 | PIT | STL | L | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1950-08-06 | PIT | NY1 | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1950-08-05 | PIT | NY1 | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1950-08-04 | PIT | NY1 | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1950-07-30 | PIT | PHI | 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1950-09-19 | PIT | BRO | — | 3.0 | 5 | 3 | 3 | 0 | 2 | 1 |
| 1950-08-29 | PIT | NY1 | — | 2.0 | 0 | 0 | 0 | 2 | 0 | 0 |
| 1950-08-22 | PIT | BRO | — | 1.1 | 1 | 4 | 4 | 4 | 0 | 0 |
| 1950-08-14 | PIT | CIN | — | 0.1 | 1 | 5 | 5 | 3 | 0 | 0 |
| 1950-08-12 | PIT | CHC | — | 1.0 | 2 | 2 | 2 | 1 | 0 | 0 |
| 1950-08-08 | PIT | STL | — | 2.0 | 1 | 0 | 0 | 1 | 2 | 0 |
| 1950-08-06 | PIT | NY1 | — | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 1950-08-05 | PIT | NY1 | — | 2.0 | 2 | 1 | 1 | 1 | 1 | 0 |
| 1950-07-30 | PIT | PHI | — | 2.0 | 1 | 1 | 1 | 1 | 0 | 1 |
| 1950-07-25 | PIT | BSN | L | 4.0 | 7 | 5 | 5 | 5 | 1 | 0 |
Career Games by Position
Circle size = games played at each position.
| Position | Games |
|---|---|
| Pitcher | 12 |
Bill Pierro: the record in brief
Bill Pierro played a first major league game on July 17, 1950 and a last one on September 19, 1950. The team column never changes: it is the Pittsburgh Pirates in 1950. Listed as a pitcher, Pierro both batted and threw right-handed. Pierro is listed at 6 feet, 1 inch and 155 pounds. Pierro was born on April 15, 1926, in Brooklyn, NY, USA. The bio records the death on April 1, 2006, in Brooklyn, NY, USA. The given name on file is William Leonard Pierro.
Across 12 games (3 starts), Pierro recorded 0 wins against 2 losses with a 10.55 ERA. Also on Pierro's record: 13 strikeouts. Against a 4.36 league ERA for the same seasons, the 10.55 mark was 142.1% worse. Pierro's only pitching season is 1950: 12 games, 13 strikeouts.
Pierro's game-by-game log, linked below the splits, holds 25 games from Retrosheet.
Every defensive appearance on record for Pierro, 12 games, came at pitcher. The fielding table credits Pierro with 0 putouts, 3 assists and 0 errors on the mound.
Frequently Asked Questions about Bill Pierro
- Was Bill Pierro a pitcher?
- Yes. Bill Pierro pitched in the major leagues, recording 0 wins and 13 strikeouts.
- How many home runs did Bill Pierro hit?
- Bill Pierro hit 0 career home runs with 2 hits.
- What teams did Bill Pierro play for?
- Bill Pierro played for one team, the Pittsburgh Pirates (1950).
- What were Bill Pierro's career stats?
- In 12 games, Bill Pierro went 0-2 with a 10.55 ERA, 13 strikeouts, and 29.0 innings pitched.
- What position did Bill Pierro play?
- Bill Pierro played primarily as a pitcher, the position where he appeared in the most games.
- How tall was Bill Pierro and how much did he weigh?
- Bill Pierro was listed at 6 feet 1 inch and 155 pounds.
- What was Bill Pierro's career ERA?
- Bill Pierro finished with a 10.55 career ERA, going 0-2 with 13 strikeouts.
- How many strikeouts did Bill Pierro have?
- Bill Pierro recorded 13 career strikeouts.
- Is Bill Pierro in the Hall of Fame?
- No. Bill Pierro has not been inducted into the National Baseball Hall of Fame.