| 12/31/2015 | ||||||
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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| Ichikawa, Katsuhiko | MR | Bel Air Princes | 18 | 07/21/1997 | Misato | JPN | Left | Left | 6' 2" | 235 lbs | - |
| Ichikawa, Masafumi | MR | Las Vegas Lost | 20 | 11/26/1995 | Chitose | JPN | Right | Right | 5' 10" | 215 lbs | - |
| Ichikawa, Tetsuo | RF | Free Agent | 37 | 02/08/1978 | Hachinohe | JPN | Right | Right | 6' 5" | 203 lbs | - |
| Iivonen, Kimmo | CF | Free Agent | 27 | 10/07/1988 | Manhattan | USA | Right | Right | 6' 2" | 193 lbs | - |
| Ikeda, Motonobu | 1B | Barrow Frosties | 21 | 01/14/1994 | Matsuyama | JPN | Right | Left | 6' 5" | 220 lbs | - |
| Ikeda, Yosai | MR | Free Agent | 35 | 10/12/1980 | Ichikawa | JPN | Right | Right | 5' 10" | 212 lbs | - |
| Imai, Kuniaki | MR | Barrow Frosties | 20 | 06/10/1995 | Koriyama | JPN | Right | Right | 6' 2" | 200 lbs | - |
| Ine, Shojiro | C | Free Agent | 19 | 08/14/1996 | Toyota | JPN | Switch | Right | 5' 10" | 205 lbs | - |
| Inman, Jeff | MR | Free Agent | 26 | 03/28/1989 | Kennesaw | USA | Right | Right | 6' 0" | 212 lbs | - |
| Inoue, Kyoichi | 1B | Dearborn Pioneers | 21 | 06/19/1994 | Asaba | JPN | Switch | Right | 6' 4" | 210 lbs | - |
| Irwin, Daniel | LF | Kingwood Knights | 25 | 11/18/1990 | New York | USA | Right | Right | 6' 1" | 180 lbs | - |
| Irwin, Jon | 2B | Free Agent | 26 | 05/02/1989 | Corona | USA | Right | Right | 5' 6" | 193 lbs | - |
| Ishii, Naomi | MR | Nichols Gnats | 22 | 03/26/1993 | Kyoto | JPN | Switch | Right | 6' 7" | 217 lbs | - |
| Ishikawa, Izumo | MR | Roman Fascists | 33 | 02/22/1982 | Takahagi | JPN | Right | Right | 5' 11" | 221 lbs | - |
| Ising, Seb | MR | Baltimore Blue Claws | 18 | 07/27/1997 | Launceston | AUS | Right | Right | 5' 11" | 215 lbs | - |
| Ito, Akira | 1B | Palm Beach Bums | 23 | 12/06/1992 | Fujisawa | JPN | Left | Left | 6' 0" | 220 lbs | - |
| Ito, Yoritomo | MR | Free Agent | 34 | 08/16/1981 | Abiko | JPN | Right | Right | 6' 2" | 205 lbs | - |
| Ives, Ken | MR | Nichols Gnats | 20 | 12/27/1995 | White Rock | CAN | Left | Right | 5' 9" | 225 lbs | - |
| Iwata, Toin | CF | Dearborn Pioneers | 22 | 08/29/1993 | Utsunomiya | JPN | Left | Left | 6' 1" | 165 lbs | - |
