2021 Saitama Seibu Lions Roster
Team Record: 55-70
Finished 6th in the JPPL
Manager: Hatsuhiko Tsuji (55-70)
Location: Tokorozawa, Japan
Ballpark: MetLife Dome
The Saitama Seibu Lions of the Japan Pacific League ended the 2021 season with a record of 55 wins and 70 losses, finishing sixth in the JPPL.
The Seibu Lions scored 521 runs and gave up 589 runs, most in the circuit. Hotaka Yamakawa led Saitama with 24 home runs, while Takeya Nakamura walloped 15 or more also. Takeya Nakamura accounted for 74 RBI. Tomoya Mori paced hitters with significant playing time by connecting at a .309 clip. Kona Takahashi topped the squad with 11 wins, and Tatsuya Imai recorded a 3.3 ERA, best among hurlers with significant time on the mound.
Players from the 2021 Saitama Seibu Lions who spent time in the Majors during their careers included Cory Spangenberg, Reed Garrett, Zach Neal, Matt Dermody and Daisuke Matsuzaka.
Hatsuhiko Tsuji served as manager.Click on column headings to sort.
| Player | Bats | Throws | Birth Date | Height | Weight | Hometown |
|---|---|---|---|---|---|---|
| Matt Dermody | R | L | July 4, 1990 | 6'5" | 190 | Norwalk, IA US |
| Reed Garrett | R | R | January 2, 1993 | 6'2" | 210 | Henrico, VA US |
| Sosuke Genda | L | R | February 16, 1993 | 5'10" | 161 | Oita, JP |
| Shota Hamaya | L | L | January 26, 1999 | 5'8" | 169 | |
| Katsunori Hirai | R | R | December 20, 1991 | 5'11" | 183 | |
| Shota Hiranuma | L | R | August 16, 1997 | 5'10" | 172 | , JP |
| Keisuke Honda | R | R | April 24, 1993 | 5'10" | 176 | , JP |
| Tatsuya Imai | R | R | May 9, 1998 | 5'11" | 154 | |
| Hiroki Inoue | R | R | July 17, 2001 | 5'11" | 180 | |
| Sho Itoh | R | R | February 10, 1999 | 5'10" | 158 | , JP |
| Yuji Kaneko | S | R | April 24, 1990 | 5'10" | 154 | |
| Seiji Kawagoe | L | L | June 30, 1993 | 5'8" | 176 | |
| Fumikazu Kimura | R | R | September 13, 1988 | 5'11" | 180 | , Tokyo JP |
| Junichiro Kishi | R | R | December 8, 1996 | 5'8" | 171 | |
| Masato Kumashiro | R | R | April 18, 1989 | 5'8" | 158 | Kumiukena-gun, Ehime JP |
| Katsuhiko Kumon | L | L | March 4, 1992 | 5'8" | 165 | , JP |
| Takumi Kuriyama | L | R | September 3, 1983 | 5'10" | 187 | Kobe, Hyogo JP |
| Tatsushi Masuda | R | R | April 23, 1988 | 5'10" | 176 | |
| Wataru Matsumoto | R | R | November 28, 1996 | 5'9" | 185 | |
| Koki Matsuoka | R | R | August 31, 2000 | 5'10" | 178 | |
| Daisuke Matsuzaka | R | R | September 13, 1980 | 6'0" | 205 | Tokyo, JP |
| Ernesto Mejia | R | R | December 2, 1985 | 6'5" | 260 | Guanare, Portuguesa VE |
| Tetsu Miyagawa | R | R | October 10, 1995 | 5'9" | 182 | |
| Yoshinobu Mizukami | R | R | July 13, 1998 | 5'9" | 178 | |
| Tomoya Mori | L | R | August 8, 1995 | 5'6" | 176 | Sakai, JP |
| Ryosuke Moriwaki | R | R | July 13, 1992 | 5'8" | 154 | |
| Takeya Nakamura | R | R | August 15, 1983 | 5'9" | 225 | Daito, Osaka JP |
| Zach Neal | R | R | November 9, 1988 | 6'3" | 220 | Columbia, SC US |
| Manaya Nishikawa | L | R | June 10, 1999 | 5'10" | 171 | |
| Ryuya Ogawa | L | L | September 3, 1991 | 5'11" | 154 | Chiba, Chiba JP |
| Masatoshi Okada | R | R | June 30, 1989 | 5'7" | 176 | |
| Ren Omagari | R | R | May 21, 1998 | 5'10" | 171 | |
| Masato Saito | L | R | August 7, 1995 | 5'10" | 182 | |
| Yasuo Sano | L | L | January 18, 1993 | 5'10" | 178 | Bangkok, TH |
| Takeru Sasaki | L | L | May 13, 1996 | 5'10" | 191 | |
| Ryusei Satoh | R | R | January 15, 1997 | 5'8" | 178 | |
| Cory Spangenberg | L | R | March 16, 1991 | 6'0" | 195 | Clarks Summit, PA US |
| Shohei Suzuki | L | L | May 20, 1998 | 5'8" | 171 | |
| Kaima Taira | L | R | November 15, 1999 | 5'8" | 209 | |
| Wataru Takagi | L | R | December 6, 1999 | 5'10" | 169 | |
| Kona Takahashi | R | R | February 3, 1997 | 6'2" | 198 | , JP |
| Aito Takeda | R | R | April 6, 1997 | 5'10" | 185 | , JP |
| Shota Takekuma | L | L | November 24, 1989 | 5'10" | 170 | Kamikawa-gun, Hokkaido JP |
| Ichiro Tamura | L | R | September 19, 1994 | 5'8" | 176 | , JP |
| Ken Togame | R | R | November 7, 1987 | 6'0" | 180 | |
| Daisuke Togawa | L | R | April 29, 1996 | 6'2" | 189 | |
| Shuta Tonosaki | R | R | December 20, 1992 | 5'10" | 165 | |
| Sena Tsuge | R | R | June 3, 1997 | 5'8" | 182 | |
| Ryusei Tsunashima | L | R | January 21, 2000 | 5'10" | 167 | |
| Brandon Tysinger | R | R | June 15, 1998 | 5'10" | 185 | |
| Towa Uema | R | R | January 31, 2001 | 5'10" | 174 | |
| Tetsuya Utsumi | L | L | April 29, 1982 | 6'1" | 198 | Joyo, Kyoto JP |
| Gakuto Wakabayashi | R | R | April 13, 1998 | 5'9" | 158 | |
| Kento Watanabe | R | R | December 26, 1998 | 5'9" | 246 | |
| Yutaro Watanabe | R | R | September 21, 2000 | 6'2" | 198 | |
| Nien Ting Wu | L | R | June 7, 1993 | 5'10" | 165 | , TW |
| Haruka Yamada | R | R | September 30, 1996 | 5'10" | 172 | |
| Hotaka Yamakawa | R | R | November 23, 1991 | 5'9" | 231 | Nahi, JP |
| Kakeru Yamanobe | R | R | May 24, 1994 | 5'6" | 163 | |
| Mitsuo Yoshikawa | L | L | April 6, 1988 | 5'10" | 165 | Fukuoka, Fukuoka JP |
| Kaito Yoza | R | R | September 15, 1995 | 5'8" | 171 |
