Naoyuki Uwasawa   Pitcher

       
 
Born: February 6, 1994
Birthplace: Matsudo, Japan
Height: 6-1
Weight: 195
Bats: Right
Throws: Right
   
Drafted: Not draft eligible
How Acquired: Acquired from Tampa Bay for cash considerations (March 2024)
   

@u.nao15
Pronunciation: NOW-yoo-key ooh-wuh-SOW-wuh
First Pro Contract: January 11, 2024 (TB)
Signing Scout: N/A
Signing Bonus: N/A
   
Pro Debut: April 10, 2024 (Worcester)
MLB Debut: May 2, 2024 (BOS)
   
Twitter: @naoyukiuwasawa
Instagram: @u.nao15

Signed with SoftBank (Dec. 2024)
 
 
 
 
 
     
  Scouting Report & Links      
         
  Physical Description: Medium frame with no remaining projection.

Mechanics: Deliberate delivery. Clean mechanics. Slow, extended leg lift. Over-the-top release point. Minimal wasted action. Loose.

Fastball: 90-91 mph with arm-side run. Uses it throughout the zone. Also mixes in a mid-to-high 80s splitter and an 86-88 mph cutter.

Curveball: 76-80 mph, mixes in lower velocities early in the count and varies speeds throughout at-bats.

Slider: 78-84 mph. Can run at similar velocities to his curveball but has a distinctive shape.

Changeup: Mid-80s show-me changeup.		   Career Notes: Pitched nine seasons in Japan. Was posted for MLB teams following the 2023 season and signed a minor-league contract with a $2.5-million salary in the major leagues with Tampa Bay in January 2024. Triggered an assignment clause in March 2024 after not being placed on the Rays' 40-man roster and was traded to Boston. Was designated for assignment and outrighted to Triple-A after clearing waivers in July 2024.

Summation: Organizational depth arm. Potential up-and-down relief option who can also give length.

Links
-		  
   
     
    Pitching Stats                                          
  year team lg level org age w l era g gs sv ip h r er hr hbp bb so whip k/9 bb/9
2014 Nippon Ham Fighters JP Fgn --- 20 8 8 3.19 23 22 0 135.1 113 49 48 14 7 45 105 1.17 6.98 2.99
  2015 Nippon Ham Fighters JP Fgn --- 21 5 6 4.18 13 13 0 75.1 75 41 35 6 5 30 43 1.39 5.14 3.58
  2017 Nippon Ham Fighters JP Fgn --- 23 4 9 3.44 15 15 0 91.2 84 39 35 11 0 32 74 1.27 7.27 3.14
  2018 Nippon Ham Fighters JP Fgn --- 24 11 6 3.16 25 25 0 165.1 146 62 58 15 5 38 151 1.11 8.22 2.07
  2019 Nippon Ham Fighters JP Fgn --- 25 5 3 3.15 11 0 0 71.1 69 34 25 5 1 27 64 1.35 8.07 3.41
  2020 Nippon Ham Fighters JP Fgn --- 26 8 6 3.06 15 0 0 97.0 85 40 33 6 1 38 90 1.27 8.35 3.53
  2021 Nippon Ham Fighters JP Fgn --- 27 12 6 2.81 24 0 0 160.1 119 53 50 8 4 48 135 1.04 7.58 2.69
  2022 Nippon Ham Fighters JP Fgn --- 28 8 9 3.38 23 0 0 152.0 129 61 57 15 9 50 127 1.18 7.52 2.96
  2023 Nippon Ham Fighters JP Fgn --- 29 9 9 2.96 24 0 0 170.0 152 66 56 14 5 41 124 1.14 6.56 2.17
2024 Worcester Red Sox IL AAA Bos 30 5 4 7.63 20 6 0 59.0 69 51 50 8 6 36 47 1.78 7.17 5.49
2024 Boston Red Sox AL MLB Bos 30 0 0 2.25 2 0 0 4.0 2 1 1 0 0 2 3 1.00 6.75 4.50
   
     
  Advanced Stats & Splits
   
     
  Awards   SoxProspects.com Awards  
  Nippon Professional Baseball League All-Star (2018)   -  
   

   
     
 
 		  
     
 
Copyright © 2003-2025 SoxProspects, LLC
All Rights Reserved.
email: info@soxprospects.com 		SoxProspects.com is not affiliated with the Boston Red Sox,
Worcester Red Sox, Portland Sea Dogs, Greenville Drive,
Salem Red Sox, or Major League Baseball..