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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| Wada, Katsuhiko | 3B | Hiroshima Toyo Carp | 26 | 02/14/1990 | Kanoya | JPN | Right | Right | 6' 3" | 205 lbs | - |
| Wada, Kenshin | SS | Free Agent | 20 | 12/16/1996 | Tokyo | JPN | Right | Right | 6' 2" | 220 lbs | - |
| Wada, Motoshige | 1B | Hokkaido Nippon-Ham Fighters | 36 | 03/05/1980 | Osaka | JPN | Switch | Right | 6' 3" | 215 lbs | - |
| Wada, Toshiharu | LF | Free Agent | 19 | 03/06/1997 | Ena | JPN | Left | Left | 5' 11" | 190 lbs | - |
| Wakabayashi, Kosaku | LF | Free Agent | 35 | 01/27/1981 | Ibaraki | JPN | Right | Right | 5' 10" | 195 lbs | - |
| Wakabayashi, Shigemasa | C | Free Agent | 21 | 03/09/1995 | Fujisawa | JPN | Switch | Right | 6' 2" | 185 lbs | - |
| Wakabayashi, Yoshifumi | RF | Free Agent | 19 | 10/20/1997 | Otsu | JPN | Right | Right | 5' 10" | 185 lbs | - |
| Wakana, Tatsui | C | Yomiuri Giants | 25 | 03/07/1991 | Okayama | JPN | Right | Right | 6' 0" | 185 lbs | - |
| Wakatabe, Eiichi | 1B | Free Agent | 34 | 05/08/1982 | Himeji | JPN | Left | Left | 6' 2" | 212 lbs | - |
| Watanabe, Akihito | 1B | Free Agent | 21 | 06/23/1995 | Matsusaka | JPN | Right | Right | 6' 3" | 235 lbs | - |
| Watanabe, Arinori | SS | Yomiuri Giants | 20 | 12/06/1996 | Funabashi | JPN | Right | Right | 6' 0" | 175 lbs | - |
| Watanabe, Daisuke | SS | Free Agent | 28 | 10/19/1988 | Nagoya | JPN | Right | Right | 6' 2" | 215 lbs | - |
| Watanabe, Hiroshi | SS | Free Agent | 33 | 07/18/1983 | Nagoya | JPN | Right | Right | 6' 0" | 195 lbs | - |
| Watanabe, Ietsuna | 1B | Free Agent | 28 | 09/08/1988 | Osaka | JPN | Left | Left | 6' 0" | 225 lbs | - |
| Watanabe, Katsuyoshi | MR | Free Agent | 30 | 09/23/1986 | Takasaki | JPN | Left | Left | 6' 0" | 190 lbs | - |
| Watanabe, Keisuke | C | Free Agent | 20 | 09/12/1996 | Akiruno | JPN | Left | Right | 5' 11" | 200 lbs | - |
| Watanabe, Kenko | 1B | Free Agent | 34 | 03/26/1982 | Urasoe | JPN | Left | Left | 6' 5" | 238 lbs | - |
| Watanabe, Kichisaburo | MR | Yokohama Bay Stars | 34 | 03/22/1982 | Kitakyushu | JPN | Right | Right | 6' 1" | 220 lbs | - |
| Watanabe, Kosaku | 3B | Free Agent | 31 | 01/28/1985 | Kawaguchi | JPN | Right | Right | 6' 0" | 187 lbs | - |
| Watanabe, Masato | MR | Free Agent | 26 | 07/30/1990 | Hitoyoshi | JPN | Right | Right | 5' 11" | 186 lbs | - |
| Watanabe, Namboku | CF | Free Agent | 33 | 06/28/1983 | Izumi | JPN | Right | Right | 6' 0" | 199 lbs | - |
| Watanabe, Otojiro | 3B | Hanshin Tigers | 19 | 02/25/1997 | Kyoto | JPN | Right | Right | 6' 0" | 200 lbs | - |
| Watanabe, Sadao | 1B | Chunichi Dragons | 21 | 11/16/1995 | Joetsu | JPN | Right | Right | 6' 1" | 190 lbs | - |
| Watanabe, Seitaro | CF | Yokohama Bay Stars | 25 | 10/01/1991 | Okinawa | JPN | Right | Right | 6' 1" | 180 lbs | - |
| Watanabe, Takanobu | MR | ORIX Buffaloes | 36 | 04/14/1980 | Kawasaki | JPN | Switch | Right | 6' 2" | 205 lbs | - |
| Watanabe, Takeo | C | Free Agent | 20 | 08/24/1996 | Shiraoka | JPN | Right | Right | 6' 3" | 220 lbs | - |
| Watanabe, Togai | CL | Chiba Lotte Marines | 22 | 11/12/1994 | Takatsuki | JPN | Switch | Right | 6' 1" | 200 lbs | - |
| Watanabe, Tsugiharu | 1B | Free Agent | 35 | 09/28/1981 | Ninomiya | JPN | Right | Right | 6' 2" | 195 lbs | - |
| Watanabe, Yohachi | 1B | Saitama Seibu Lions | 20 | 06/05/1996 | Wako | JPN | Left | Left | 6' 0" | 190 lbs | - |
| Watanabe, Yoriyoshi | LF | Free Agent | 28 | 03/20/1988 | Ichinoseki | JPN | Right | Right | 6' 0" | 220 lbs | - |
| Watanabe, Yoson | SP | Free Agent | 27 | 06/29/1989 | Toyama | JPN | Right | Right | 6' 5" | 213 lbs | - |
