| 12/31/2016 | ||||||
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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| Ibarra, José | 1B | Chippewa River Chiefs | 17 | 11/21/1999 | Tenango de Río Blanco | MEX | Switch | Right | 6' 1" | 230 lbs | - |
| Ichikawa, Katsuhiko | SP | Bel Air Princes | 19 | 07/21/1997 | Misato | JPN | Left | Left | 6' 2" | 240 lbs | - |
| Ichikawa, Masafumi | MR | Las Vegas Lost | 21 | 11/26/1995 | Chitose | JPN | Right | Right | 5' 10" | 215 lbs | - |
| Iivonen, Kimmo | CF | Free Agent | 28 | 10/07/1988 | Manhattan | USA | Right | Right | 6' 2" | 195 lbs | - |
| Ikeda, Motonobu | 1B | Barrow Frosties | 22 | 01/14/1994 | Matsuyama | JPN | Right | Left | 6' 5" | 220 lbs | - |
| Imai, Akihiko | SS | Bel Air Princes | 18 | 03/18/1998 | Osaka | JPN | Right | Right | 5' 11" | 210 lbs | - |
| Ine, Harumi | 2B | Free Agent | 31 | 01/10/1985 | Hakodate | JPN | Right | Right | 6' 0" | 191 lbs | - |
| Ine, Yoriie | CF | Cherry Hill Stealers | 20 | 09/26/1996 | Sapporo | JPN | Right | Right | 6' 1" | 185 lbs | - |
| Ingram, Rob | RF | Houston Sting | 24 | 04/17/1992 | McPherson | USA | Right | Right | 6' 4" | 170 lbs | - |
| Inoue, Kamatari | 2B | Huntsville Sabercats | 17 | 11/22/1999 | Tokyo | JPN | Right | Right | 6' 1" | 190 lbs | - |
| Inoue, Kyoichi | 1B | Dearborn Pioneers | 22 | 06/19/1994 | Asaba | JPN | Switch | Right | 6' 4" | 210 lbs | - |
| Inoue, Sen | MR | Free Agent | 33 | 12/03/1983 | Ube | JPN | Switch | Right | 5' 9" | 194 lbs | - |
| Inoue, Sotan | SP | Huntsville Sabercats | 27 | 01/16/1989 | Tajimi | JPN | Switch | Left | 5' 8" | 180 lbs | - |
| Irwin, Jon | 2B | Free Agent | 27 | 05/02/1989 | Corona | USA | Right | Right | 5' 6" | 193 lbs | - |
| Ishida, Mokichi | CL | Roman Fascists | 26 | 03/15/1990 | Hitachi | JPN | Left | Left | 6' 2" | 219 lbs | - |
| Ishii, Naomi | MR | Nichols Gnats | 23 | 03/26/1993 | Kyoto | JPN | Switch | Right | 6' 7" | 217 lbs | - |
| Ishikawa, Izumo | MR | Free Agent | 34 | 02/22/1982 | Takahagi | JPN | Right | Right | 5' 11" | 221 lbs | - |
| Ishikawa, Toyoaki | 2B | Houston Sting | 24 | 06/20/1992 | Tokyo | JPN | Right | Right | 6' 0" | 170 lbs | - |
| Ising, Seb | MR | Baltimore Blue Claws | 19 | 07/27/1997 | Launceston | AUS | Right | Right | 5' 11" | 215 lbs | - |
| Ito, Akira | 1B | Palm Beach Bums | 24 | 12/06/1992 | Fujisawa | JPN | Left | Left | 6' 0" | 220 lbs | - |
| Ito, Yoritomo | MR | Free Agent | 35 | 08/16/1981 | Abiko | JPN | Right | Right | 6' 2" | 207 lbs | - |
| Ito, Yoshifumi | MR | Baltimore Blue Claws | 25 | 10/17/1991 | Toyonaka | JPN | Left | Left | 6' 6" | 210 lbs | - |
| Ives, Ken | MR | Nichols Gnats | 21 | 12/27/1995 | White Rock | CAN | Left | Right | 5' 9" | 225 lbs | - |
| Iwamoto, Seiichi | CF | Cherry Hill Stealers | 17 | 09/19/1999 | Fukuyama | JPN | Left | Left | 6' 0" | 165 lbs | - |
