Kai Peterson
Toronto Blue Jays (A+)P
Age: 22
Bats/Throws: L/L
6'1" / 190
DOB: 8/14/2002
(22 years, 8 months, 18 days)
P
Quick Links
More
Stats
Stat Groups:
Select
You can shift + click on full MLB seasons in Season Stats and games in Game Logs to select spans for aggregate stats. Read more here
Preseason ProjectionsIn-Season ProjectionsMinor Leagues
| Season | Team | Level | Age | W W - Wins | L L - Losses | SV SV - Saves | G G - Games Pitched | GS GS - Games Started | IP IP - Innings Pitched | divider | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | GB% GB% - Ground Ball Percentage (GB/BIP) | HR/FB HR/FB - Home Run to Fly Ball Ratio | divider | vFA vFA - Fourseam Fastball velocity (Pitch Info) | divider | ERA ERA - Earned Run Average ((ER*9)/IP) | xERA xERA - Expected ERA | FIP FIP - Fielder Independent Pitching on an ERA scale | xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | TOR | A | 21 | 6 | 3 | 2 | 22 | 0 | 31.1 | 18.10 | 8.33 | 0.29 | .367 | 66.5% | 43.8% | 6.3% | 4.60 | 3.30 | 3.45 | ||||||
| 2024 | TOR | A+ | 21 | 0 | 1 | 2 | 18 | 0 | 18.1 | 13.75 | 6.87 | 0.00 | .282 | 63.3% | 48.7% | 0.0% | 4.42 | 3.58 | 4.43 | ||||||
| 2024 | TOR | MiLB | 21 | 6 | 4 | 4 | 40 | 0 | 49.2 | 16.49 | 7.79 | 0.18 | .330 | 65.4% | 46.0% | 3.4% | 4.53 | 3.40 | 3.81 | ||||||
| 2025 | Steamer | PROJ | 22 | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.99 | 6.59 | 1.15 | .295 | 72.2% | 41.7% | 5.04 | 5.42 | 5.45 | 0.0 | ||||||
| 2025 | OOPSY | PROJ | 22 | 0 | 0 | 0 | 1 | 0 | 1.2 | 11.00 | 6.63 | 1.10 | .290 | 75.1% | 4.38 | 4.71 | 0.0 | ||||||||
| 2025 | TOR | A+ | 22 | 1 | 0 | 0 | 6 | 0 | 8.1 | 8.64 | 6.48 | 1.08 | .222 | 100.0% | 21.1% | 8.3% | 1.08 | 6.94 | 7.38 | ||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.68 | 6.88 | 1.20 | .293 | 71.7% | 5.29 | 5.60 | 0.0 | |||||||||
| 2025 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 0 | 1.3 | 9.70 | 6.16 | 1.29 | .287 | 72.9% | 4.82 | 5.10 | 0.0 |
| Season | Team | Level | Age | W W - Wins | L L - Losses | SV SV - Saves | G G - Games Pitched | GS GS - Games Started | IP IP - Innings Pitched | divider | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | GB% GB% - Ground Ball Percentage (GB/BIP) | HR/FB HR/FB - Home Run to Fly Ball Ratio | divider | vFA vFA - Fourseam Fastball velocity (Pitch Info) | divider | ERA ERA - Earned Run Average ((ER*9)/IP) | xERA xERA - Expected ERA | FIP FIP - Fielder Independent Pitching on an ERA scale | xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | TOR | A | 21 | 6 | 3 | 2 | 22 | 0 | 31.1 | 18.10 | 8.33 | 0.29 | .367 | 66.5% | 43.8% | 6.3% | 4.60 | 3.30 | 3.45 | ||||||
| 2024 | TOR | A+ | 21 | 0 | 1 | 2 | 18 | 0 | 18.1 | 13.75 | 6.87 | 0.00 | .282 | 63.3% | 48.7% | 0.0% | 4.42 | 3.58 | 4.43 | ||||||
| 2024 | TOR | MiLB | 21 | 6 | 4 | 4 | 40 | 0 | 49.2 | 16.49 | 7.79 | 0.18 | .330 | 65.4% | 46.0% | 3.4% | 4.53 | 3.40 | 3.81 | ||||||
| 2025 | Steamer | PROJ | 22 | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.99 | 6.59 | 1.15 | .295 | 72.2% | 41.7% | 5.04 | 5.42 | 5.45 | 0.0 | ||||||
| 2025 | OOPSY | PROJ | 22 | 0 | 0 | 0 | 1 | 0 | 1.2 | 11.00 | 6.63 | 1.10 | .290 | 75.1% | 4.38 | 4.71 | 0.0 | ||||||||
| 2025 | TOR | A+ | 22 | 1 | 0 | 0 | 6 | 0 | 8.1 | 8.64 | 6.48 | 1.08 | .222 | 100.0% | 21.1% | 8.3% | 1.08 | 6.94 | 7.38 | ||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 7.68 | 6.88 | 1.20 | .293 | 71.7% | 5.29 | 5.60 | 0.0 | |||||||||
| 2025 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 0 | 1.3 | 9.70 | 6.16 | 1.29 | .287 | 72.9% | 4.82 | 5.10 | 0.0 |
Preseason ProjectionsIn-Season ProjectionsMinor Leagues
| Season | Team | Level | W W - Wins | L L - Losses | ERA ERA - Earned Run Average ((ER*9)/IP) | G G - Games Pitched | GS GS - Games Started | QS | CG CG - Complete Games | ShO ShO - Shoutouts | SV SV - Saves | HLD HLD - Holds | BS BS - Blown Saves | IP IP - Innings Pitched | TBF TBF - Total Batters Faced | H H - Hits Allowed | R R - Runs Allowed | ER ER - Earned Runs | HR HR - Home Runs | BB BB - Walks | IBB IBB - Intentional | HBP HBP - Hit Batters | WP WP - Wild Pitches | BK BK - Balks | SO SO - Strikeouts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | TOR | A | 6 | 3 | 4.60 | 22 | 0 | 0 | 0 | 2 | 1 | 2 | 31.1 | 148 | 19 | 19 | 16 | 1 | 29 | 1 | 6 | 8 | 1 | 63 | |
| 2024 | TOR | A+ | 0 | 1 | 4.42 | 18 | 0 | 0 | 0 | 2 | 0 | 0 | 18.1 | 86 | 11 | 11 | 9 | 0 | 14 | 0 | 5 | 1 | 0 | 28 | |
| 2024 | TOR | MiLB | 6 | 4 | 4.53 | 40 | 0 | 0 | 0 | 4 | 1 | 2 | 49.2 | 234 | 30 | 30 | 25 | 1 | 43 | 1 | 11 | 9 | 1 | 91 | |
| 2025 | Steamer | PROJ | 0 | 0 | 5.04 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2025 | OOPSY | PROJ | 0 | 0 | 4.38 | 1 | 0 | 0 | 0 | 0 | 1.2 | 6 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 2 | |||||
| 2025 | TOR | A+ | 1 | 0 | 1.08 | 6 | 0 | 0 | 0 | 0 | 0 | 1 | 8.1 | 37 | 5 | 1 | 1 | 1 | 6 | 0 | 4 | 1 | 0 | 8 | |
| 2025 | Steamer | ROS | 0 | 0 | 5.29 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2025 | OOPSY | ROS | 0 | 0 | 4.82 | 1 | 0 | 0 | 0 | 0 | 1.3 | 6 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
| Season | Team | Level | W W - Wins | L L - Losses | ERA ERA - Earned Run Average ((ER*9)/IP) | G G - Games Pitched | GS GS - Games Started | QS | CG CG - Complete Games | ShO ShO - Shoutouts | SV SV - Saves | HLD HLD - Holds | BS BS - Blown Saves | IP IP - Innings Pitched | TBF TBF - Total Batters Faced | H H - Hits Allowed | R R - Runs Allowed | ER ER - Earned Runs | HR HR - Home Runs | BB BB - Walks | IBB IBB - Intentional | HBP HBP - Hit Batters | WP WP - Wild Pitches | BK BK - Balks | SO SO - Strikeouts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | TOR | A | 6 | 3 | 4.60 | 22 | 0 | 0 | 0 | 2 | 1 | 2 | 31.1 | 148 | 19 | 19 | 16 | 1 | 29 | 1 | 6 | 8 | 1 | 63 | |
| 2024 | TOR | A+ | 0 | 1 | 4.42 | 18 | 0 | 0 | 0 | 2 | 0 | 0 | 18.1 | 86 | 11 | 11 | 9 | 0 | 14 | 0 | 5 | 1 | 0 | 28 | |
| 2024 | TOR | MiLB | 6 | 4 | 4.53 | 40 | 0 | 0 | 0 | 4 | 1 | 2 | 49.2 | 234 | 30 | 30 | 25 | 1 | 43 | 1 | 11 | 9 | 1 | 91 | |
| 2025 | Steamer | PROJ | 0 | 0 | 5.04 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2025 | OOPSY | PROJ | 0 | 0 | 4.38 | 1 | 0 | 0 | 0 | 0 | 1.2 | 6 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 2 | |||||
| 2025 | TOR | A+ | 1 | 0 | 1.08 | 6 | 0 | 0 | 0 | 0 | 0 | 1 | 8.1 | 37 | 5 | 1 | 1 | 1 | 6 | 0 | 4 | 1 | 0 | 8 | |
| 2025 | Steamer | ROS | 0 | 0 | 5.29 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2025 | OOPSY | ROS | 0 | 0 | 4.82 | 1 | 0 | 0 | 0 | 0 | 1.3 | 6 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesAverages
| Season | Team | Level | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | K/BB K/BB - Strikeout to Walk Ratio (SO/BB) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | divider | K% K% - Strikeout Percentage (SO/TBF) | BB% BB% - Walk Percentage (BB/TBF) | K-BB% K-BB% - The difference between strikeout percentage and walk percentage | divider | AVG AVG - Batting Average Against | WHIP WHIP - Walks + Hits divided by Innings Pitched | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | divider | ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better | FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better | divider | FIP FIP - Fielder Independent Pitching on an ERA scale |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | TOR | A | 18.10 | 8.33 | 2.17 | 0.29 | 42.6% | 19.6% | 23.0% | .168 | 1.53 | .367 | 66.5% | 114 | 81 | 3.30 | ||||
| 2024 | TOR | A+ | 13.75 | 6.87 | 2.00 | 0.00 | 32.6% | 16.3% | 16.3% | .164 | 1.36 | .282 | 63.3% | 111 | 87 | 3.58 | ||||
| 2024 | TOR | MiLB | 16.49 | 7.79 | 2.12 | 0.18 | 38.9% | 18.4% | 20.5% | .167 | 1.47 | .330 | 65.4% | 113 | 83 | 3.40 | ||||
| 2025 | Steamer | PROJ | 7.99 | 6.59 | 1.21 | 1.15 | 19.1% | 15.7% | 3.3% | .250 | 1.70 | .295 | 72.2% | 5.42 | ||||||
| 2025 | OOPSY | PROJ | 11.00 | 6.63 | 1.66 | 1.10 | 25.7% | 15.5% | 10.2% | .223 | 1.62 | .290 | 75.1% | 4.71 | ||||||
| 2025 | TOR | A+ | 8.64 | 6.48 | 1.33 | 1.08 | 21.6% | 16.2% | 5.4% | .185 | 1.32 | .222 | 100.0% | 23 | 145 | 6.94 | ||||
| 2025 | Steamer | ROS | 7.68 | 6.88 | 1.12 | 1.20 | 18.1% | 16.2% | 1.9% | .253 | 1.75 | .293 | 71.7% | 5.60 | ||||||
| 2025 | OOPSY | ROS | 9.70 | 6.16 | 1.57 | 1.29 | 22.8% | 14.5% | 8.3% | .235 | 1.62 | .287 | 72.9% | 5.10 |
| Season | Team | Level | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | K/BB K/BB - Strikeout to Walk Ratio (SO/BB) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | divider | K% K% - Strikeout Percentage (SO/TBF) | BB% BB% - Walk Percentage (BB/TBF) | K-BB% K-BB% - The difference between strikeout percentage and walk percentage | divider | AVG AVG - Batting Average Against | WHIP WHIP - Walks + Hits divided by Innings Pitched | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | divider | ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better | FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better | divider | FIP FIP - Fielder Independent Pitching on an ERA scale |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | TOR | A | 18.10 | 8.33 | 2.17 | 0.29 | 42.6% | 19.6% | 23.0% | .168 | 1.53 | .367 | 66.5% | 114 | 81 | 3.30 | ||||
| 2024 | TOR | A+ | 13.75 | 6.87 | 2.00 | 0.00 | 32.6% | 16.3% | 16.3% | .164 | 1.36 | .282 | 63.3% | 111 | 87 | 3.58 | ||||
| 2024 | TOR | MiLB | 16.49 | 7.79 | 2.12 | 0.18 | 38.9% | 18.4% | 20.5% | .167 | 1.47 | .330 | 65.4% | 113 | 83 | 3.40 | ||||
| 2025 | Steamer | PROJ | 7.99 | 6.59 | 1.21 | 1.15 | 19.1% | 15.7% | 3.3% | .250 | 1.70 | .295 | 72.2% | 5.42 | ||||||
| 2025 | OOPSY | PROJ | 11.00 | 6.63 | 1.66 | 1.10 | 25.7% | 15.5% | 10.2% | .223 | 1.62 | .290 | 75.1% | 4.71 | ||||||
| 2025 | TOR | A+ | 8.64 | 6.48 | 1.33 | 1.08 | 21.6% | 16.2% | 5.4% | .185 | 1.32 | .222 | 100.0% | 23 | 145 | 6.94 | ||||
| 2025 | Steamer | ROS | 7.68 | 6.88 | 1.12 | 1.20 | 18.1% | 16.2% | 1.9% | .253 | 1.75 | .293 | 71.7% | 5.60 | ||||||
| 2025 | OOPSY | ROS | 9.70 | 6.16 | 1.57 | 1.29 | 22.8% | 14.5% | 8.3% | .235 | 1.62 | .287 | 72.9% | 5.10 |
