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| Player Report for #11 Yasukazu Kobayashi | | Sunday, June 25th, 2028 | 
| Rec | 0-5, 11 SV | | ERA | 3.77 | | IP | 28.2 | | BB | 19 | | K | 33 |
| | Name: | Yasukazu Kobayashi | Contract: | Minor League Contract | | Nickname: | | Salary: | | | Birthday: | 01-16-2006 | Signed Through: | | | Age: | 22 | Years of Major League Service: | None, None | | Born in: | Kobe (Hyogo) | Major League Service Days this Year: | None | | Nationality: | Japanese | | | | Height: | 6' 4" | Years on 40-Man Roster: | None, None | | Weight: | 195 lbs | Years of Pro Service: | 3 Years | | | | Arbitration Eligibility: | Not yet eligible | | Position: | CL | Minor League Option Years: | 3 option years left | | Bats: | Right | | | | Throws: | Right | Contract Extension | - | | Status: | Tired | Drafted | 2025, 11th Pick in Round 9 | | Morale: | Unhappy | Local Popularity (National) | Unknown (Unknown) |
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| Pitching Ratings (OSA) | | Pitching | Stuff | Movement | Control | Velocity | | | Overall | 6 | 5 | 2 | 92-94 Mph | | | Versus LHP | 6 | 5 | 2 | | | | Versus RHP | 6 | 5 | 2 | | | | Talent | 5 | 5 | 5 | | |
| Pitching Ratings | | | Pitches: | Fastball, Slider | | Endurance: | 2 | | | | | Groundball Pct.: | 60 | | | | | Holding Runners: | 3 | | | |
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| Batting Ratings (OSA) | | Batting | Contact | Gap | Power | Discipline/Eye | Avoid K's | | | Overall | 1 | 1 | 1 | 1 | 1 | | | Versus LHP | 1 | 1 | 1 | 1 | 1 | | | Versus RHP | 1 | 1 | 1 | 1 | 1 | | | Talent | 3 | 5 | 1 | 2 | 3 | |
| Running & Bunting Ratings | | | Fielding Ratings | | Running Speed: | 3 | | Pitcher 3 | | Stealing Ability: | 2 | | | | Baserunning Instincts: | 1 | | | | Sacrifice Bunt: | 4 | | | | Bunt for Hit: | 1 | | | | Hitter Type: | Spray Hitter | | | | | | | | | | | | | | | | | |
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| Game Log, Last 10 Games | | Date | Opponent | Result | Start | IP | H | R | ER | BB | K | Dec | | | | | | | | | 06-24-2028 | @ MTG | Win, 5-4 | | 2.0 | 2 | 0 | 0 | 1 | 1 | | | | | | | | | | 06-23-2028 | @ MTG | Win, 5-2 | | 1.0 | 2 | 0 | 0 | 0 | 2 | Save | | | | | | | | | 06-20-2028 | SAM | Win, 4-2 | | 1.0 | 0 | 0 | 0 | 0 | 2 | Save | | | | | | | | | 06-19-2028 | WTJ | Win, 5-3 | | 1.0 | 0 | 0 | 0 | 1 | 1 | Save | | | | | | | | | 06-14-2028 | @ ARK | Loss, 3-4 | | 1.2 | 3 | 1 | 1 | 1 | 3 | Loss | | | | | | | | | 06-09-2028 | @ BIN | Loss, 2-3 | | 1.0 | 4 | 1 | 1 | 1 | 0 | Loss | | | | | | | | | 06-08-2028 | @ BIN | Win, 6-3 | | 1.0 | 1 | 0 | 0 | 0 | 0 | Save | | | | | | | | | 06-05-2028 | TEN | Win, 3-0 | | 1.0 | 1 | 0 | 0 | 0 | 1 | Save | | | | | | | | | 05-27-2028 | AKR | Win, 5-2 | | 1.0 | 1 | 0 | 0 | 0 | 2 | Save | | | | | | | | | 05-24-2028 | TUL | Win, 3-2 | | 1.0 | 0 | 0 | 0 | 0 | 1 | Save | | | | | | | |
| UBL Double A 2028 Pitching Stats | | Pitching | G | GS | W | L | SV | ERA | IP | HA | R | ER | HR | BB | K | CG | CG% | SHO | QS | QS% | | Overall | 22 | 0 | 0 | 5 | 11 | 3.77 | 28.2 | 31 | 12 | 12 | 1 | 19 | 33 | 0 | 0.0 | 0 | 0 | 0.0 | | Pitching | SVO | BS | SV% | RA | GF | R/9 | H/9 | K/9 | BB/9 | ERC | WHIP | VORP | BABIP | | | | | | | Overall | 13 | 2 | 84.6 | 22 | 17 | 16.64 | 9.73 | 10.36 | 5.97 | 5.30 | 1.74 | 3.6 | .385 | | | | | | | Pitching | AB | H | 2B | 3B | HR | R | BB | K | SF | SH | HP | AVG | OBP | SLG | OPS | | | | | vs. LHB | 40 | 16 | 2 | 0 | 0 | 5 | 9 | 10 | 0 | 0 | 1 | .400 | .520 | .450 | .970 | | | | | vs. RHB | 72 | 15 | 4 | 0 | 1 | 7 | 10 | 23 | 0 | 1 | 2 | .208 | .321 | .306 | .627 | | | |
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| UBL Double A 2028 Pitching Splits | | Split | G | GS | W | L | SV | ERA | IP | HA | R | ER | HR | BB | K | | | Last Week | 4 | 0 | 0 | 0 | 3 | 0.00 | 5.0 | 4 | 0 | 0 | 0 | 2 | 6 | | | April | 6 | 0 | 0 | 3 | 0 | 5.91 | 10.2 | 10 | 7 | 7 | 1 | 9 | 11 | | | May | 8 | 0 | 0 | 0 | 6 | 3.24 | 8.1 | 8 | 3 | 3 | 0 | 6 | 12 | | | June | 8 | 0 | 0 | 2 | 5 | 1.86 | 9.2 | 13 | 2 | 2 | 0 | 4 | 10 | | | Last Year | 5 | 0 | 0 | 0 | 0 | 1.59 | 5.2 | 7 | 2 | 1 | 0 | 3 | 6 | | | Career | 27 | 0 | 0 | 5 | 11 | 3.41 | 34.1 | 38 | 14 | 13 | 1 | 22 | 39 | | | Home | 8 | 0 | 0 | 1 | 6 | 4.91 | 7.1 | 8 | 4 | 4 | 0 | 6 | 11 | | | Road | 14 | 0 | 0 | 4 | 5 | 3.38 | 21.1 | 23 | 8 | 8 | 1 | 13 | 22 | | | Grass | 22 | 0 | 0 | 5 | 11 | 3.77 | 28.2 | 31 | 12 | 12 | 1 | 19 | 33 | | | Day | 8 | 0 | 0 | 1 | 5 | 1.80 | 10.0 | 9 | 2 | 2 | 0 | 3 | 11 | | | Night | 14 | 0 | 0 | 4 | 6 | 4.82 | 18.2 | 22 | 10 | 10 | 1 | 16 | 22 | |
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| Career Pitching Stats | | Year/Team/League | Age | G | GS | W | L | SV | ERA | IP | HA | R | ER | HR | BB | K | CG | SHO | WHIP | BABIP | VORP |
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| Career Minor League Pitching Stats | | Year/Team/League | Age | G | GS | W | L | SV | ERA | IP | HA | R | ER | HR | BB | K | CG | SHO | WHIP | BABIP | VORP | | 2025 South Bend - A | 19 | 5 | 0 | 0 | 0 | 1 | 1.59 | 5.2 | 1 | 1 | 1 | 0 | 2 | 1 | 0 | 0 | 0.53 | .056 | 2.3 | | 2026 South Bend - A | 20 | 38 | 0 | 3 | 4 | 1 | 3.13 | 69.0 | 57 | 28 | 24 | 2 | 18 | 42 | 0 | 0 | 1.09 | .253 | 17.8 | | 2027 South Bend - A | 21 | 37 | 0 | 7 | 3 | 0 | 2.14 | 75.2 | 71 | 27 | 18 | 2 | 27 | 73 | 0 | 0 | 1.30 | .333 | 26.9 | | 2027 Mobile - AA | 21 | 5 | 0 | 0 | 0 | 0 | 1.59 | 5.2 | 7 | 2 | 1 | 0 | 3 | 6 | 0 | 0 | 1.76 | .389 | 2.3 | | 2028 Mobile - AA | 22 | 22 | 0 | 0 | 5 | 11 | 3.77 | 28.2 | 31 | 12 | 12 | 1 | 19 | 33 | 0 | 0 | 1.74 | .385 | 3.6 | | Total UBLAA | | 27 | 0 | 0 | 5 | 11 | 3.41 | 34.1 | 38 | 14 | 13 | 1 | 22 | 39 | 0 | 0 | 1.75 | .385 | 5.9 | | Total UBLA | | 80 | 0 | 10 | 7 | 2 | 2.57 | 150.1 | 129 | 56 | 43 | 4 | 47 | 116 | 0 | 0 | 1.17 | .283 | 47.0 |
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| Career Fielding Stats | | Year/Team/League | POS | G | GS | PO | A | DP | TC | E | PCT | INN | RANGE | PB | RSTA | RTO | RTO% | | 2028 Mobile - AA | P | 22 | 0 | 0 | 2 | 0 | 2 | 0 | 1.000 | 28.2 | 0.63 | | | | | | | | | | | | | | | | | | | | |
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| Player History | | 06-01-2025 | Drafted in the 2025 first-year player draft (Round 9, Pick 11, 251st overall Pick) by the Arizona Diamondbacks. | | 01-01-2026 | SISA scouting updated ratings (potential): Stuff: 3 (5); Movement: 2 (5); Control: 1 (5). | | 01-01-2027 | OSA scouting updated ratings (potential): Stuff: 6 (5); Movement: 4 (5); Control: 2 (5). | | 05-31-2027 | Was selected to the 2027 UBL Single A All-Star Game. | | 01-01-2028 | OSA scouting updated ratings (potential): Stuff: 6 (5); Movement: 5 (5); Control: 2 (5). |
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