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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| Yamada, Kazuyuki | 3B | Whitewater Eagles | 21 | 12/21/1993 | Naze | JPN | Right | Right | 6' 0" | 165 lbs | - |
| Yamaguchi, Yoshino | MR | Baltimore Blue Claws | 21 | 09/24/1993 | Kobe | JPN | Right | Right | 6' 3" | 220 lbs | - |
| Yamamoto, Isoruko | MR | San Angelo Mustangs | 19 | 02/08/1995 | Toyohashi | JPN | Left | Right | 6' 8" | 250 lbs | - |
| Yamamoto, Katsuhiko | LF | Victoria Vikings | 21 | 01/29/1993 | Ichikawa | JPN | Left | Left | 6' 1" | 190 lbs | - |
| Yamamoto, Kazuyuki | SP | Whitewater Eagles | 18 | 05/03/1996 | Hino | JPN | Right | Right | 6' 2" | 245 lbs | - |
| Yamamoto, Otojiro | RF | Coney Island Cyclones | 19 | 05/21/1995 | Nishio | JPN | Left | Right | 6' 0" | 205 lbs | - |
| Yamamoto, Takiji | SS | Palm Beach Bums | 19 | 09/22/1995 | Kitakata | JPN | Switch | Right | 6' 0" | 200 lbs | - |
| Yamamoto, Terumoto | MR | Palm Beach Bums | 21 | 12/16/1993 | Izumi | JPN | Left | Left | 5' 8" | 220 lbs | - |
| Yamashita, Ietsuna | SP | Free Agent | 27 | 08/23/1987 | Kanazawa | JPN | Right | Right | 6' 2" | 195 lbs | - |
| Yamashita, Masahide | MR | Free Agent | 37 | 07/25/1977 | Naka | JPN | Right | Right | 6' 1" | 209 lbs | - |
| Yamashita, Nobuhisa | SP | Baltimore Blue Claws | 21 | 11/29/1993 | Yawata | JPN | Switch | Right | 6' 0" | 230 lbs | $500,000 |
| Yamauchi, Norihisa | CF | Barrow Frosties | 22 | 06/13/1992 | Nagoya | JPN | Right | Right | 5' 11" | 185 lbs | - |
| Yao, Wan-fu | MR | Free Agent | 20 | 03/05/1994 | Winnipeg | CAN | Right | Right | 6' 3" | 235 lbs | - |
| Yigit, Ekmel | RF | Huntsville Sabercats | 26 | 07/15/1988 | Broken Arrow | USA | Left | Left | 6' 3" | 220 lbs | - |
| York, Eric | SS | Victoria Vikings | 23 | 12/18/1991 | Alhambra | USA | Right | Right | 6' 3" | 230 lbs | - |
| York, Ron | LF | Free Agent | 24 | 11/29/1990 | Maumelle | USA | Right | Right | 6' 2" | 190 lbs | - |
| Yoshida, Hiroya | MR | Palm Beach Bums | 18 | 10/18/1996 | Tsuchiura | JPN | Right | Right | 6' 3" | 195 lbs | - |
| Yoshida, Shihi | 1B | St. Paul Saints | 19 | 07/23/1995 | Oyama | JPN | Right | Right | 6' 4" | 195 lbs | - |
| Yoshida, Shojiro | MR | Free Agent | 38 | 09/20/1976 | Fujiyoshida | JPN | Left | Left | 5' 10" | 207 lbs | - |
| Yoshikawa, Senichi | LF | Free Agent | 33 | 01/06/1981 | Sakai | JPN | Right | Right | 6' 4" | 194 lbs | - |
| Yoshioka, Shinzo | SP | New Orleans Jedi Knights | 24 | 05/18/1990 | Yokohama | JPN | Right | Right | 5' 8" | 180 lbs | - |
| Yoshioka, Tadaaki | LF | Palm Beach Bums | 21 | 02/13/1993 | Kawasaki | JPN | Left | Right | 6' 0" | 205 lbs | - |
| Young, Nelson | MR | Free Agent | 23 | 04/10/1991 | Alliance | USA | Left | Left | 6' 1" | 215 lbs | - |
| Young, Wilson | CF | Free Agent | 24 | 09/12/1990 | Tucson Estates | USA | Right | Right | 5' 9" | 175 lbs | - |
| Yuan, Ju-wei | SP | Kingwood Knights | 21 | 10/30/1993 | Terrebonne | CAN | Left | Right | 6' 3" | 230 lbs | - |
| Yuke, Ed | SP | Palm Beach Bums | 19 | 08/01/1995 | Montreal | CAN | Right | Left | 6' 3" | 240 lbs | - |
| Yun, Min-han | C | Bel Air Princes | 19 | 10/11/1995 | Pyongtaek | KOR | Left | Right | 6' 3" | 210 lbs | - |
