Jeter Martinez
Seattle Mariners (A)P
Age: 19
Bats/Throws: R/R
6'4" / 180
DOB: 2/16/2006
(19 years, 3 months, 13 days)
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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 17 | 2 | 2 | 0 | 10 | 8 | 47.0 | 10.53 | 3.83 | 0.19 | .160 | 64.8% | 56.4% | 3.6% | 1.72 | 3.38 | 3.54 | ||||||
| 2024 | SEA | CPX | 18 | 0 | 4 | 0 | 13 | 11 | 39.2 | 11.12 | 7.03 | 0.23 | .296 | 65.0% | 50.5% | 3.4% | 3.86 | 5.28 | 5.64 | ||||||
| 2025 | Steamer | PROJ | 19 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5.06 | 6.67 | 1.50 | .294 | 68.6% | 42.9% | 6.33 | 6.59 | 6.34 | 0.0 | ||||||
| 2025 | OOPSY | PROJ | 19 | 0 | 0 | 0 | 1 | 1 | 3.0 | 7.18 | 6.36 | 1.24 | .288 | 69.4% | 5.41 | 5.67 | 0.0 | ||||||||
| 2025 | SEA | A | 19 | 1 | 2 | 0 | 7 | 7 | 23.1 | 8.10 | 6.17 | 0.39 | .338 | 47.1% | 54.2% | 4.5% | 8.10 | 5.43 | 5.66 | ||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 0 | 0 | 1.0 | 5.21 | 5.62 | 1.36 | .293 | 69.3% | 5.69 | 5.90 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 17 | 2 | 2 | 0 | 10 | 8 | 47.0 | 10.53 | 3.83 | 0.19 | .160 | 64.8% | 56.4% | 3.6% | 1.72 | 3.38 | 3.54 | ||||||
| 2024 | SEA | CPX | 18 | 0 | 4 | 0 | 13 | 11 | 39.2 | 11.12 | 7.03 | 0.23 | .296 | 65.0% | 50.5% | 3.4% | 3.86 | 5.28 | 5.64 | ||||||
| 2025 | Steamer | PROJ | 19 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5.06 | 6.67 | 1.50 | .294 | 68.6% | 42.9% | 6.33 | 6.59 | 6.34 | 0.0 | ||||||
| 2025 | OOPSY | PROJ | 19 | 0 | 0 | 0 | 1 | 1 | 3.0 | 7.18 | 6.36 | 1.24 | .288 | 69.4% | 5.41 | 5.67 | 0.0 | ||||||||
| 2025 | SEA | A | 19 | 1 | 2 | 0 | 7 | 7 | 23.1 | 8.10 | 6.17 | 0.39 | .338 | 47.1% | 54.2% | 4.5% | 8.10 | 5.43 | 5.66 | ||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 0 | 0 | 1.0 | 5.21 | 5.62 | 1.36 | .293 | 69.3% | 5.69 | 5.90 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 2 | 2 | 1.72 | 10 | 8 | 1 | 0 | 0 | 0 | 0 | 47.0 | 179 | 17 | 15 | 9 | 1 | 20 | 0 | 3 | 2 | 0 | 55 | |
| 2024 | SEA | CPX | 0 | 4 | 3.86 | 13 | 11 | 0 | 0 | 0 | 0 | 0 | 39.2 | 184 | 30 | 24 | 17 | 1 | 31 | 0 | 5 | 6 | 0 | 49 | |
| 2025 | Steamer | PROJ | 0 | 0 | 6.33 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2025 | OOPSY | PROJ | 0 | 0 | 5.41 | 1 | 1 | 0 | 0 | 0 | 3.0 | 14 | 3 | 2 | 2 | 0 | 2 | 0 | 0 | 2 | |||||
| 2025 | SEA | A | 1 | 2 | 8.10 | 7 | 7 | 0 | 0 | 0 | 0 | 0 | 23.1 | 116 | 26 | 25 | 21 | 1 | 16 | 0 | 4 | 8 | 0 | 21 | |
| 2025 | Steamer | ROS | 0 | 0 | 5.69 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 2 | 2 | 1.72 | 10 | 8 | 1 | 0 | 0 | 0 | 0 | 47.0 | 179 | 17 | 15 | 9 | 1 | 20 | 0 | 3 | 2 | 0 | 55 | |
| 2024 | SEA | CPX | 0 | 4 | 3.86 | 13 | 11 | 0 | 0 | 0 | 0 | 0 | 39.2 | 184 | 30 | 24 | 17 | 1 | 31 | 0 | 5 | 6 | 0 | 49 | |
| 2025 | Steamer | PROJ | 0 | 0 | 6.33 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | |||
| 2025 | OOPSY | PROJ | 0 | 0 | 5.41 | 1 | 1 | 0 | 0 | 0 | 3.0 | 14 | 3 | 2 | 2 | 0 | 2 | 0 | 0 | 2 | |||||
| 2025 | SEA | A | 1 | 2 | 8.10 | 7 | 7 | 0 | 0 | 0 | 0 | 0 | 23.1 | 116 | 26 | 25 | 21 | 1 | 16 | 0 | 4 | 8 | 0 | 21 | |
| 2025 | Steamer | ROS | 0 | 0 | 5.69 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 10.53 | 3.83 | 2.75 | 0.19 | 30.7% | 11.2% | 19.6% | .109 | 0.79 | .160 | 64.8% | 37 | 70 | 3.38 | ||||
| 2024 | SEA | CPX | 11.12 | 7.03 | 1.58 | 0.23 | 26.6% | 16.8% | 9.8% | .203 | 1.54 | .296 | 65.0% | 75 | 100 | 5.28 | ||||
| 2025 | Steamer | PROJ | 5.06 | 6.67 | 0.76 | 1.50 | 11.7% | 15.4% | -3.7% | .282 | 1.87 | .294 | 68.6% | 6.59 | ||||||
| 2025 | OOPSY | PROJ | 7.18 | 6.36 | 1.13 | 1.24 | 17.0% | 15.1% | 1.9% | .255 | 1.71 | .288 | 69.4% | 5.67 | ||||||
| 2025 | SEA | A | 8.10 | 6.17 | 1.31 | 0.39 | 18.1% | 13.8% | 4.3% | .271 | 1.80 | .338 | 47.1% | 180 | 124 | 5.43 | ||||
| 2025 | Steamer | ROS | 5.21 | 5.62 | 0.93 | 1.36 | 12.4% | 13.4% | -1.0% | .277 | 1.73 | .293 | 69.3% | 5.90 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | SEA | DSL | 10.53 | 3.83 | 2.75 | 0.19 | 30.7% | 11.2% | 19.6% | .109 | 0.79 | .160 | 64.8% | 37 | 70 | 3.38 | ||||
| 2024 | SEA | CPX | 11.12 | 7.03 | 1.58 | 0.23 | 26.6% | 16.8% | 9.8% | .203 | 1.54 | .296 | 65.0% | 75 | 100 | 5.28 | ||||
| 2025 | Steamer | PROJ | 5.06 | 6.67 | 0.76 | 1.50 | 11.7% | 15.4% | -3.7% | .282 | 1.87 | .294 | 68.6% | 6.59 | ||||||
| 2025 | OOPSY | PROJ | 7.18 | 6.36 | 1.13 | 1.24 | 17.0% | 15.1% | 1.9% | .255 | 1.71 | .288 | 69.4% | 5.67 | ||||||
| 2025 | SEA | A | 8.10 | 6.17 | 1.31 | 0.39 | 18.1% | 13.8% | 4.3% | .271 | 1.80 | .338 | 47.1% | 180 | 124 | 5.43 | ||||
| 2025 | Steamer | ROS | 5.21 | 5.62 | 0.93 | 1.36 | 12.4% | 13.4% | -1.0% | .277 | 1.73 | .293 | 69.3% | 5.90 |
