Jason Jennings
Pitcher · Career Stats, Bio & Records (2001-2009)
Jason Jennings was a pitcher who played in Major League Baseball from 2001 to 2009 for the Colorado Rockies, the Houston Astros, and the Texas Rangers, a span of 9 seasons. Across 225 career appearances, he went 62-74 with a 4.95 ERA and 749 strikeouts. He also batted .207 with 2 home runs. Jason Jennings was a Rookie of the Year.
- 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 / R
- Height / Weight
- 6'2" / 235 lb
- MLB Debut
- 2001-08-23
- Last Game
- 2009-08-26
- Awards
- Rookie of the Year
Full name: Jason Ryan Jennings
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2001 | COL | NL | 4 | 1 | 7 | 7 | 1 | 1 | 0 | 39.1 | 42 | 20 | 19 | 26 | 4.58 | 4.42 (-4%) | 499.6 |
| 2002 | COL | NL | 16 | 8 | 32 | 32 | 0 | 0 | 0 | 185.1 | 201 | 93 | 70 | 127 | 4.52 | 4.28 (-6%) | -1852.5 |
| 2003 | COL | NL | 12 | 13 | 32 | 32 | 1 | 0 | 0 | 181.1 | 212 | 103 | 88 | 119 | 5.11 | 4.40 (-16%) | -1322.5 |
| 2004 | COL | NL | 11 | 12 | 33 | 33 | 0 | 0 | 0 | 201.0 | 241 | 123 | 101 | 133 | 5.51 | 4.46 (-23%) | -3112.6 |
| 2005 | COL | NL | 6 | 9 | 20 | 20 | 1 | 0 | 0 | 122.0 | 130 | 68 | 62 | 75 | 5.02 | 4.29 (-17%) | -973.7 |
| 2006 | COL | NL | 9 | 13 | 32 | 32 | 3 | 2 | 0 | 212.0 | 206 | 89 | 85 | 142 | 3.78 | 4.53 (+17%) | 2389.4 |
| 2007 | HOU | NL | 2 | 9 | 19 | 18 | 0 | 0 | 0 | 99.0 | 119 | 71 | 34 | 71 | 6.45 | 4.47 (-44%) | -2272.1 |
| 2008 | TEX | AL | 0 | 5 | 6 | 6 | 0 | 0 | 0 | 27.1 | 35 | 26 | 18 | 12 | 8.56 | 4.32 (-98%) | -2610.6 |
| 2009 | TEX | AL | 2 | 4 | 44 | 0 | 0 | 0 | 1 | 61.0 | 67 | 28 | 28 | 44 | 4.13 | 4.32 (+4%) | -457.4 |
| Career · 9 seasons | 62 | 74 | 225 | 180 | 6 | 3 | 1 | 1,128.1 | 1,253 | 621 | 505 | 749 | 4.95 | — | -9,712 | ||
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 234 | 329 | 18 | 68 | 14 | 0 | 2 | 26 | 0 | 19 | 80 | .207 | .251 | .267 | .519 | -1,139 |
Career AVG .207 vs. league average .265 across their career seasons — 22.0% below league average.
Career OBP .251 vs. league average .333 across their career seasons — 24.6% below league average.
Career SLG .267 vs. league average .422 across their career seasons — 36.7% below league average.
Career OPS .519 vs. league average .756 across their career seasons — 31.3% 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2001 | COL | NL | 7 | 15 | 2 | 4 | 1 | 0 | 1 | 2 | 0 | 1 | 3 | .267 | — | — | — | — | 0.0 |
| 2002 | COL | NL | 32 | 62 | 6 | 19 | 4 | 0 | 0 | 11 | 0 | 3 | 13 | .306 | .261 (+17%) | .331 (+5%) | .416 (-11%) | .747 (-4%) | -29.6 |
| 2003 | COL | NL | 33 | 54 | 3 | 12 | 3 | 0 | 0 | 3 | 0 | 5 | 16 | .222 | .264 (-16%) | .332 (-15%) | .422 (-34%) | .754 (-26%) | -232.4 |
| 2004 | COL | NL | 37 | 71 | 3 | 17 | 4 | 0 | 1 | 6 | 0 | 2 | 16 | .239 | .266 (-10%) | .335 (-22%) | .427 (-21%) | .762 (-22%) | -263.9 |
| 2005 | COL | NL | 22 | 38 | 0 | 6 | 1 | 0 | 0 | 1 | 0 | 2 | 12 | .158 | — | — | — | — | 0.0 |
| 2006 | COL | NL | 32 | 62 | 3 | 8 | 1 | 0 | 0 | 2 | 0 | 3 | 12 | .129 | .269 (-52%) | .336 (-50%) | .431 (-66%) | .768 (-59%) | -612.8 |
| 2007 | HOU | NL | 21 | 26 | 1 | 2 | 0 | 0 | 0 | 1 | 0 | 3 | 8 | .077 | — | — | — | — | 0.0 |
| 2008 | TEX | AL | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| 2009 | TEX | AL | 44 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | — | — | — | — | 0.0 |
| Career · 9 seasons | 234 | 329 | 18 | 68 | 14 | 0 | 2 | 26 | 0 | 19 | 80 | .207 | — | — | — | — | -1,139 | ||
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 (459 games) →Per-game data from Retrosheet (regular season, through 2025).
Batting — Home / Away
| Split | G | AB | R | H | HR | RBI | AVG |
|---|---|---|---|---|---|---|---|
| Home | 119 | 153 | 10 | 35 | 0 | 13 | .229 |
| Away | 115 | 176 | 8 | 33 | 2 | 13 | .188 |
Pitching — Home / Away
| Split | G | IP | H | ER | BB | SO | ERA |
|---|---|---|---|---|---|---|---|
| Home | 113 | 534.1 | 633 | 318 | 256 | 348 | 5.36 |
| Away | 112 | 594.0 | 620 | 303 | 249 | 401 | 4.59 |
Last 10 Games — Pitching
| Date | Tm | Opp | Dec | IP | H | R | ER | BB | SO | HR |
|---|---|---|---|---|---|---|---|---|---|---|
| 2009-08-26 | TEX | NYY | — | 1.0 | 3 | 3 | 2 | 0 | 1 | 0 |
| 2009-08-20 | TEX | MIN | — | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2009-08-18 | TEX | MIN | L | 1.1 | 4 | 3 | 3 | 1 | 1 | 2 |
| 2009-08-17 | TEX | MIN | — | 0.2 | 1 | 0 | 0 | 1 | 0 | 0 |
| 2009-08-14 | TEX | BOS | — | 0.1 | 0 | 0 | 0 | 1 | 0 | 0 |
| 2009-08-07 | TEX | LAA | — | 0.2 | 2 | 1 | 1 | 1 | 1 | 1 |
| 2009-08-04 | TEX | OAK | — | 1.2 | 1 | 0 | 0 | 0 | 3 | 0 |
| 2009-08-01 | TEX | SEA | — | 1.0 | 3 | 1 | 1 | 0 | 1 | 1 |
| 2009-07-29 | TEX | DET | — | 1.2 | 2 | 0 | 0 | 0 | 1 | 0 |
| 2009-07-27 | TEX | DET | — | 1.0 | 2 | 1 | 1 | 0 | 1 | 0 |
Fielding Statistics
Career Fielding Totals by Position
Season-by-Season Fielding
| Year | Team | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|---|
| 2001 | COL | P | 7 | 7 | 4 | 7 | 0 | 3 |
| 2002 | COL | P | 32 | 32 | 14 | 28 | 1 | 1 |
| 2003 | COL | P | 32 | 32 | 9 | 25 | 2 | 2 |
| 2004 | COL | P | 33 | 33 | 18 | 25 | 1 | 2 |
| 2005 | COL | P | 20 | 20 | 14 | 17 | 2 | 2 |
| 2006 | COL | P | 32 | 32 | 14 | 25 | 1 | 3 |
| 2007 | HOU | P | 19 | 18 | 6 | 5 | 0 | 0 |
| 2008 | TEX | P | 6 | 6 | 4 | 3 | 1 | 0 |
| 2009 | TEX | P | 44 | 0 | 1 | 6 | 1 | 0 |
Career Games by Position
Circle size = games played at each position.
| Position | Games |
|---|---|
| Pitcher | 225 |
Awards & Honors
| Year | Award | Notes |
|---|---|---|
| 2002 | MLB Players Choice Outstanding Rookie | |
| 2002 | Rookie of the Month | August |
| 2002 | Rookie of the Year | |
| 2002 | TSN Rookie Pitcher of the Year |
Salary History
Jason Jennings's recorded salaries total $18,071,000 over 8 seasons, 2002 to 2009. This total is partial: the salary data covers 1985 to 2016, and Jennings's career ran from 2001 to 2009. No salary is recorded for 2001.
| Year | Team | League | Salary |
|---|---|---|---|
| 2009 | TEX | AL | $800,000 |
| 2008 | TEX | AL | $4,000,000 |
| 2007 | HOU | NL | $5,500,000 |
| 2006 | COL | NL | $4,500,000 |
| 2005 | COL | NL | $2,400,000 |
| 2004 | COL | NL | $340,000 |
| 2003 | COL | NL | $325,000 |
| 2002 | COL | NL | $206,000 |
| Total recorded salary (partial) | $18,071,000 | ||
College History
| School Name | City | State | Years Attended |
|---|---|---|---|
| Baylor University | Waco | TX | 1997, 1998, 1999 |
Award Voting History
| Year | Award | League | Finish | Points Won | Points Max | Votes First |
|---|---|---|---|---|---|---|
| 2002 | Rookie of the Year | NL | 1st | 150.0 | 160 | 27 |
Most Similar Players
Career comps based on counting + rate stats and primary position. Score is relative — closest peer anchors at ~98%.
Jason Jennings (highlighted) compared to peers across the same era.
Jason Jennings: the record in brief
August 23, 2001 and August 26, 2009 bracket Jason Jennings's time in the majors: the debut and the last game on record. By club, Jennings's seasons break down as the Colorado Rockies (2001 through 2006), the Houston Astros (2007), and the Texas Rangers (2008 to 2009). Jennings played primarily as a pitcher and batted left-handed and threw right-handed. The bio adds a birth date on July 17, 1978, in Dallas, TX, USA and a listed size of 6 feet, 2 inches and 235 pounds. The bio lists the given name Jason Ryan.
The pitching table credits Jennings with a 62-74 record and a 4.95 ERA in 225 games. Also on Jennings's record: 749 strikeouts. Against a 4.39 league ERA for the same seasons, the 4.95 mark was 12.9% worse. Jennings won 16 games in 2002, the most of any season listed. Jennings struck out 142 batters in 2006, a career high. Among the heaviest workloads, the lowest ERA was 3.78 in 2006, when the league's was 4.53.
Frequently Asked Questions about Jason Jennings
- What years did Jason Jennings play?
- Jason Jennings played in Major League Baseball from 2001 to 2009.
- Was Jason Jennings a pitcher?
- Yes. Jason Jennings pitched in the major leagues, recording 62 wins and 749 strikeouts.
- How many home runs did Jason Jennings hit?
- Jason Jennings hit 2 career home runs with 68 hits.
- What teams did Jason Jennings play for?
- Jason Jennings played for 3 teams: the Colorado Rockies (2001–2006), the Houston Astros (2007), and the Texas Rangers (2008–2009).
- Did Jason Jennings win a Cy Young Award?
- No. Jason Jennings did not win the Cy Young Award.
- What awards did Jason Jennings win?
- Jason Jennings won the Rookie of the Year award (2002).
- What were Jason Jennings's career stats?
- In 225 games, Jason Jennings went 62-74 with a 4.95 ERA, 749 strikeouts, 1,128.1 innings pitched, and 1 saves. At the plate he had 68 hits and 2 home runs.
- How much did Jason Jennings earn in his career?
- Jason Jennings's recorded salaries total $18,071,000 over 8 seasons, 2002 to 2009. This total is partial: the salary data covers 1985 to 2016, and Jennings's career ran from 2001 to 2009. No salary is recorded for 2001.
- What was Jason Jennings's salary?
- Jason Jennings's last recorded salary was $800,000, in 2009. His highest recorded salary was $5,500,000, in 2007, and his lowest was $206,000, in 2002. The Salary History table lists each season from 2002 to 2009.
- What position did Jason Jennings play?
- Jason Jennings played primarily as a pitcher, the position where he appeared in the most games.
- How tall was Jason Jennings and how much did he weigh?
- Jason Jennings was listed at 6 feet 2 inches and 235 pounds.
- What was Jason Jennings's career ERA?
- Jason Jennings finished with a 4.95 career ERA, going 62-74 with 749 strikeouts.
- How many strikeouts did Jason Jennings have?
- Jason Jennings recorded 749 career strikeouts.
- Is Jason Jennings in the Hall of Fame?
- No. Jason Jennings has not been inducted into the National Baseball Hall of Fame.