Rank History
| Year | Team | Position | Team Rank | OFP |
|---|---|---|---|---|
| 2021 | BAL | RHP | 32 | 40 |
Grades Update: Dec 2020
| OFP | Role | FB | SL | CH | Cnt/Cmd |
|---|---|---|---|---|---|
| 40 | 40 | 50 | 45 | 50 | 50/45 |
Dec 2020 Report
Evaluator: James Chipman
Age: 25 yr
Height: 6-2
Weight: 205 lbs
Hits/Throws: R/R
Acquired: 2017 Draft - Round 19, LAA
RuleV: On 40-Man Roster
Physical Description: Ideal frame. Big strong, sturdy frame. High waist; long levers. Broad shoulders; strong upper body; thick lower half. Physically maxed. Impressive work ethic; student of the game.
Delivery & Mechanics: Stretch only; long, deceptive deep arm-circle beyond backside. Tilts to clear arm through extremely fast and powerful arm stroke. High 3/4 arm slot with high effort delivery. Repeats well. Long strider. Hides the ball well.
Fastball: Inconsistent velocity. Occasionally sat below-average around 89-91 in '19; reportedly averaged 93 mph, scraping 96 this summer. Firm heavy life through the zone; moderate sink in the lower third. Tough to square up and drive. Avoids the heart of the plate and isn't afraid to work inside; moves the ball around the edges of the zone. Deception and command pad the overall quality. Grade: 50
Slider: Used sparingly over my looks. Sits 82-85 with low efficiency, low spin gyroish movement. Inconsistent execution; flashes near average, sits below-average. Modest swing and miss, predominantly against RHB. Grade: 45
Changeup: Good pitch. Sits 83-85, has feel and is thrown with conviction. Maintains arm-speed with optimal velocity separation from FB. Features late tumble with solid fade at its best. Grade: 50
Control and Command: FB command is borderline above-average at times. Command of his secondary pitches significantly lags behind, near below-average. Frequently gets ahead and keeps himself in pitchers counts. Nibbles at times hunting for strikeouts. Occasional FB heavy sequencing against same-sided batters. Control: 50 | Command: 45
Overall: Older prospect that put up impressive numbers across A+, AA, AAA and the AFL in 2019. Close to a finished product and recently added to the 40-man roster, Mattson lacks a loud carrying tool but has a successful track record and the ingredients of a potential low leverage reliever.
OFP: 40
Role: 40 - Low Leverage Reliever
Risk: Moderate
