Roberto Perez
Seattle Mariners (CPX)P
Age: 21
Bats/Throws: R/R
5'9" / 145
DOB: 1/21/2004
(21 years, 5 months, 8 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
In-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 | SEA | DSL | 20 | 3 | 3 | 0 | 17 | 3 | 38.0 | 10.89 | 2.61 | 0.24 | .292 | 59.1% | 43.6% | 2.6% | 2.84 | 2.92 | 3.16 | ||||||
| 2025 | SEA | CPX | 21 | 1 | 0 | 1 | 11 | 0 | 12.2 | 8.53 | 2.84 | 0.00 | .185 | 72.7% | 46.2% | 0.0% | 1.42 | 3.95 | 4.73 | ||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 5.29 | 8.19 | 1.43 | .288 | 69.7% | 6.46 | 6.86 | 0.0 | |||||||||
| 2025 | OOPSY | ROS | 21 | 0 | 0 | 0 | 1 | 0 | 1.1 | 5.09 | 3.75 | 1.22 | .282 | 55.8% | 5.48 | 5.17 | 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 | SEA | DSL | 20 | 3 | 3 | 0 | 17 | 3 | 38.0 | 10.89 | 2.61 | 0.24 | .292 | 59.1% | 43.6% | 2.6% | 2.84 | 2.92 | 3.16 | ||||||
| 2025 | SEA | CPX | 21 | 1 | 0 | 1 | 11 | 0 | 12.2 | 8.53 | 2.84 | 0.00 | .185 | 72.7% | 46.2% | 0.0% | 1.42 | 3.95 | 4.73 | ||||||
| 2025 | Steamer | ROS | 0 | 0 | 0 | 1 | 0 | 1.0 | 5.29 | 8.19 | 1.43 | .288 | 69.7% | 6.46 | 6.86 | 0.0 | |||||||||
| 2025 | OOPSY | ROS | 21 | 0 | 0 | 0 | 1 | 0 | 1.1 | 5.09 | 3.75 | 1.22 | .282 | 55.8% | 5.48 | 5.17 | 0.0 |
In-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 | SEA | DSL | 3 | 3 | 2.84 | 17 | 3 | 0 | 0 | 0 | 0 | 1 | 38.0 | 156 | 29 | 18 | 12 | 1 | 11 | 0 | 2 | 1 | 0 | 46 | |
| 2025 | SEA | CPX | 1 | 0 | 1.42 | 11 | 0 | 0 | 0 | 1 | 3 | 0 | 12.2 | 45 | 5 | 3 | 2 | 0 | 4 | 0 | 2 | 1 | 0 | 12 | |
| 2025 | Steamer | ROS | 0 | 0 | 6.46 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2025 | OOPSY | ROS | 0 | 0 | 5.48 | 1 | 0 | 0 | 0 | 0 | 1.1 | 4 | 1 | 1 | 1 | 0 | 0 | 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 | SEA | DSL | 3 | 3 | 2.84 | 17 | 3 | 0 | 0 | 0 | 0 | 1 | 38.0 | 156 | 29 | 18 | 12 | 1 | 11 | 0 | 2 | 1 | 0 | 46 | |
| 2025 | SEA | CPX | 1 | 0 | 1.42 | 11 | 0 | 0 | 0 | 1 | 3 | 0 | 12.2 | 45 | 5 | 3 | 2 | 0 | 4 | 0 | 2 | 1 | 0 | 12 | |
| 2025 | Steamer | ROS | 0 | 0 | 6.46 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2025 | OOPSY | ROS | 0 | 0 | 5.48 | 1 | 0 | 0 | 0 | 0 | 1.1 | 4 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
In-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 | SEA | DSL | 10.89 | 2.61 | 4.18 | 0.24 | 29.5% | 7.1% | 22.4% | .203 | 1.05 | .292 | 59.1% | 59 | 60 | 2.92 | ||||
| 2025 | SEA | CPX | 8.53 | 2.84 | 3.00 | 0.00 | 26.7% | 8.9% | 17.8% | .128 | 0.71 | .185 | 72.7% | 30 | 81 | 3.95 | ||||
| 2025 | Steamer | ROS | 5.29 | 8.19 | 0.65 | 1.43 | 11.9% | 18.5% | -6.6% | .274 | 2.00 | .288 | 69.7% | 6.86 | ||||||
| 2025 | OOPSY | ROS | 5.09 | 3.75 | 1.36 | 1.22 | 15.3% | 11.3% | 4.0% | .262 | 1.26 | .282 | 55.8% | 5.17 |
| 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 | SEA | DSL | 10.89 | 2.61 | 4.18 | 0.24 | 29.5% | 7.1% | 22.4% | .203 | 1.05 | .292 | 59.1% | 59 | 60 | 2.92 | ||||
| 2025 | SEA | CPX | 8.53 | 2.84 | 3.00 | 0.00 | 26.7% | 8.9% | 17.8% | .128 | 0.71 | .185 | 72.7% | 30 | 81 | 3.95 | ||||
| 2025 | Steamer | ROS | 5.29 | 8.19 | 0.65 | 1.43 | 11.9% | 18.5% | -6.6% | .274 | 2.00 | .288 | 69.7% | 6.86 | ||||||
| 2025 | OOPSY | ROS | 5.09 | 3.75 | 1.36 | 1.22 | 15.3% | 11.3% | 4.0% | .262 | 1.26 | .282 | 55.8% | 5.17 |
