Jonah Bayliss
Pitcher · Career Stats, Bio & Records (2005-2007)
Jonah Bayliss was a pitcher who played in Major League Baseball from 2005 to 2007 for the Kansas City Royals and the Pittsburgh Pirates, a span of 3 seasons. Across 61 career appearances, he went 5-4 with a 6.75 ERA and 54 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" / 200 lb
- MLB Debut
- 2005-06-21
- Last Game
- 2007-08-03
Full name: Jonah James Bayliss
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2005 | KCA | AL | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 11.2 | 7 | 6 | 4 | 10 | 4.63 | 4.29 (-8%) | -229.3 |
| 2006 | PIT | NL | 1 | 1 | 11 | 0 | 0 | 0 | 0 | 14.2 | 13 | 7 | 11 | 15 | 4.30 | 4.53 (+5%) | 31.1 |
| 2007 | PIT | NL | 4 | 3 | 39 | 0 | 0 | 0 | 0 | 37.2 | 51 | 35 | 18 | 29 | 8.36 | 4.47 (-87%) | -1488.5 |
| Career · 3 seasons | 5 | 4 | 61 | 0 | 0 | 0 | 0 | 64.0 | 71 | 48 | 33 | 54 | 6.75 | — | -1,687 | ||
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.
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2005 | KCA | AL | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| 2006 | PIT | NL | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| 2007 | PIT | NL | 39 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| Career · 3 seasons | 61 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — | — | 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 (122 games) →Per-game data from Retrosheet (regular season, through 2025).
Batting — Home / Away
| Split | G | AB | R | H | HR | RBI | AVG |
|---|---|---|---|---|---|---|---|
| Home | 27 | 0 | 0 | 0 | 0 | 0 | — |
| Away | 34 | 0 | 0 | 0 | 0 | 0 | — |
Pitching — Home / Away
| Split | G | IP | H | ER | BB | SO | ERA |
|---|---|---|---|---|---|---|---|
| Home | 27 | 34.0 | 41 | 26 | 23 | 28 | 6.88 |
| Away | 34 | 30.0 | 30 | 22 | 10 | 26 | 6.60 |
Last 10 Games — Pitching
| Date | Tm | Opp | Dec | IP | H | R | ER | BB | SO | HR |
|---|---|---|---|---|---|---|---|---|---|---|
| 2007-08-03 | PIT | CIN | — | 3.0 | 6 | 6 | 6 | 2 | 1 | 3 |
| 2007-06-22 | PIT | LAA | L | 0.1 | 2 | 1 | 1 | 0 | 0 | 0 |
| 2007-06-21 | PIT | SEA | — | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2007-06-19 | PIT | SEA | — | 0.1 | 2 | 1 | 1 | 1 | 1 | 1 |
| 2007-06-12 | PIT | TEX | — | 0.1 | 2 | 1 | 1 | 0 | 1 | 0 |
| 2007-06-10 | PIT | NYY | — | 1.0 | 3 | 3 | 3 | 1 | 1 | 0 |
| 2007-06-08 | PIT | NYY | — | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 |
| 2007-06-05 | PIT | WAS | — | 0.2 | 1 | 1 | 1 | 0 | 0 | 0 |
| 2007-06-03 | PIT | LAD | — | 2.0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 2007-05-31 | PIT | SDP | — | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 |
Fielding Statistics
Career Games by Position
Circle size = games played at each position.
| Position | Games |
|---|---|
| Pitcher | 61 |
Salary History
Jonah Bayliss's recorded salaries total $384,000 over 1 season, in 2007. This total is partial: the salary data covers 1985 to 2016, and Bayliss's career ran from 2005 to 2007. No salary is recorded for 2005 and 2006.
| Year | Team | League | Salary |
|---|---|---|---|
| 2007 | PIT | NL | $384,000 |
| Total recorded salary (partial) | $384,000 | ||
College History
| School Name | City | State | Years Attended |
|---|---|---|---|
| Trinity College | Hartford | CT | 2000, 2001, 2002 |
Jonah Bayliss: the record in brief
Between the debut on June 21, 2005 and the final game on August 3, 2007, Jonah Bayliss built the record summarized on this page. Club by club, the record runs the Kansas City Royals (2005) and the Pittsburgh Pirates (2006 to 2007). At 6-foot-1 and 200 pounds, Bayliss is listed as a pitcher. Bayliss batted and threw right-handed, per the bio block. Bayliss was born on August 13, 1980, in North Adams, MA, USA. The given name on file is Jonah James Bayliss.
Bayliss's career pitching line is 5 wins, 4 losses and a 6.75 ERA over 61 appearances. Bayliss had 54 strikeouts. The league ERA over Bayliss's seasons was 4.43, so the 6.75 figure ran 52.4% worse than average. In 2007, one of the busiest seasons, Bayliss posted a 8.36 ERA; the league figure that year was 4.47.
The position breakdown shows 61 games, all at pitcher. The fielding table credits Bayliss with 3 putouts, 5 assists and 0 errors on the mound.
The one salary on file is $384,000, for 2007. This total is partial: the salary data covers 1985 to 2016, and Bayliss's career ran from 2005 to 2007. No salary is recorded for 2005 and 2006. Before the majors, Bayliss played college baseball at Trinity College (2000, 2001, and 2002). Bayliss's game-by-game log, linked below the splits, holds 122 games from Retrosheet.
Frequently Asked Questions about Jonah Bayliss
- What years did Jonah Bayliss play?
- Jonah Bayliss played in Major League Baseball from 2005 to 2007.
- Was Jonah Bayliss a pitcher?
- Yes. Jonah Bayliss pitched in the major leagues, recording 5 wins and 54 strikeouts.
- What teams did Jonah Bayliss play for?
- Jonah Bayliss played for 2 teams: the Kansas City Royals (2005) and the Pittsburgh Pirates (2006–2007).
- What were Jonah Bayliss's career stats?
- In 61 games, Jonah Bayliss went 5-4 with a 6.75 ERA, 54 strikeouts, and 64.0 innings pitched.
- How much did Jonah Bayliss earn in his career?
- Jonah Bayliss's recorded salaries total $384,000 over 1 season, in 2007. This total is partial: the salary data covers 1985 to 2016, and Bayliss's career ran from 2005 to 2007. No salary is recorded for 2005 and 2006.
- What was Jonah Bayliss's salary?
- Jonah Bayliss's recorded salary was $384,000 in 2007.
- What position did Jonah Bayliss play?
- Jonah Bayliss played primarily as a pitcher, the position where he appeared in the most games.
- How tall was Jonah Bayliss and how much did he weigh?
- Jonah Bayliss was listed at 6 feet 1 inch and 200 pounds.
- What was Jonah Bayliss's career ERA?
- Jonah Bayliss finished with a 6.75 career ERA, going 5-4 with 54 strikeouts.
- How many strikeouts did Jonah Bayliss have?
- Jonah Bayliss recorded 54 career strikeouts.
- Is Jonah Bayliss in the Hall of Fame?
- No. Jonah Bayliss has not been inducted into the National Baseball Hall of Fame.