| 12/31/2018 | ||||||
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| K |
| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| Kay, Neil | CF | Bismark Border Guards | 31 | 11/04/1987 | Carnarvon | AUS | Right | Right | 6' 2" | 190 lbs | - |
| Keers, Tom | MR | Free Agent | 27 | 09/04/1991 | San Antonio | USA | Left | Left | 6' 6" | 217 lbs | - |
| Kelley, Clyde | 2B | Bismark Border Guards | 23 | 02/13/1995 | Avenal | USA | Right | Right | 6' 3" | 215 lbs | - |
| Keys, Jeff | SP | Riverside Red Bulls | 32 | 02/28/1986 | Santa Maria | USA | Switch | Right | 6' 0" | 193 lbs | - |
| Killick, Bert | SP | Red Deer Wranglers | 23 | 04/13/1995 | Oranjestad | ARU | Right | Right | 6' 5" | 215 lbs | - |
| Kim, Chun-yeong | SS | Riverside Red Bulls | 22 | 08/30/1996 | Kwangju | KOR | Switch | Right | 5' 11" | 185 lbs | - |
| King, Tyler | 3B | Free Agent | 30 | 08/25/1988 | Mesa | USA | Right | Right | 6' 4" | 204 lbs | - |
| Knight, John | MR | Free Agent | 31 | 06/12/1987 | Raytown | USA | Left | Left | 6' 3" | 233 lbs | - |
| Kouki, Haruki | CF | Menlo Maniacs | 34 | 10/08/1984 | Ube | JPN | Right | Right | 6' 2" | 192 lbs | - |
