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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| Sakuma, Hidehira | MR | Balzac Rams | 22 | 04/25/1996 | Shimonoseki | JPN | Right | Left | 5' 11" | 235 lbs | - |
| Salinas, Anastasio | C | Free Agent | 29 | 10/05/1989 | Pasadena | USA | Switch | Right | 6' 0" | 204 lbs | - |
| Salinas, León | 2B | Free Agent | 28 | 08/22/1990 | Bogota | COL | Right | Right | 5' 7" | 158 lbs | - |
| Sánchez, Alberto | CF | Free Agent | 29 | 12/29/1989 | Granadilla | CRC | Left | Right | 6' 3" | 227 lbs | - |
| Sánchez, António | C | Riverside Red Bulls | 31 | 12/13/1987 | Bejucal | CUB | Right | Right | 6' 3" | 231 lbs | - |
| Sánchez, José | C | Free Agent | 25 | 01/18/1993 | Lowell | USA | Right | Right | 6' 0" | 205 lbs | - |
| Sánchez, José | SP | Moose Jaw Ghostbusters | 22 | 04/10/1996 | Santiago de las Vegas | CUB | Right | Right | 6' 0" | 245 lbs | - |
| Sánchez, Luis Miguel | 2B | Moose Jaw Ghostbusters | 19 | 06/25/1999 | Santo Domingo | DOM | Right | Right | 5' 10" | 165 lbs | - |
| Sandoval, Manny | CL | Balzac Rams | 22 | 02/03/1996 | Las Cumbres | PAN | Left | Left | 6' 0" | 210 lbs | - |
| Sandoval, Miguel | 3B | Culver City Extras | 25 | 03/16/1993 | Concord | USA | Switch | Right | 5' 11" | 210 lbs | - |
| Santos, Alfonso | LF | Culver City Extras | 24 | 06/20/1994 | San José de Ocoa | DOM | Left | Left | 6' 1" | 160 lbs | - |
| Santos, Cristóbal | SP | La Crosse Loggers | 22 | 08/10/1996 | Caguas | PUR | Right | Right | 6' 7" | 215 lbs | - |
| Santos, Orlando | 1B | Menlo Maniacs | 24 | 05/13/1994 | Moorpark | USA | Right | Right | 6' 0" | 186 lbs | - |
| Sawyer, Bob | RF | Red Deer Wranglers | 24 | 06/20/1994 | Orange | USA | Left | Left | 6' 0" | 180 lbs | - |
| Scott, Rob | 1B | Balzac Rams | 26 | 05/16/1992 | Houston | USA | Right | Right | 6' 2" | 204 lbs | - |
| Shafer, Darryl | MR | Menlo Maniacs | 34 | 03/04/1984 | Imperial | USA | Right | Right | 6' 0" | 182 lbs | - |
| Shenk, Alex | SS | San Diego Smashers | 24 | 07/14/1994 | Tulsa | USA | Left | Right | 5' 10" | 185 lbs | - |
| Sherman, Gunner | SS | Red Deer Wranglers | 33 | 07/25/1985 | South Boston | USA | Right | Right | 6' 0" | 194 lbs | - |
| Shibata, Yoshitoki | SP | La Crosse Loggers | 19 | 11/26/1999 | Matsudo | JPN | Left | Left | 5' 11" | 210 lbs | - |
| Silva, Esteban | 1B | Bismark Border Guards | 23 | 02/01/1995 | New York | USA | Switch | Left | 6' 0" | 215 lbs | - |
| Simms, Hilton | MR | Free Agent | 31 | 03/18/1987 | Palm Coast | USA | Left | Left | 6' 3" | 242 lbs | - |
| Simons, Ryan | MR | Free Agent | 25 | 01/04/1993 | Brooklyn | USA | Right | Right | 6' 3" | 220 lbs | - |
| Simpson, Paul | 2B | Free Agent | 29 | 07/23/1989 | Lawton | USA | Right | Right | 6' 0" | 217 lbs | - |
| Simpson, Richard | MR | San Diego Smashers | 24 | 01/17/1994 | Houston | USA | Left | Left | 6' 3" | 245 lbs | - |
| Simpson, William | SP | Menlo Maniacs | 24 | 10/29/1994 | Hamilton | CAN | Switch | Right | 6' 6" | 226 lbs | - |
| Sims, Dale | LF | San Diego Smashers | 25 | 06/22/1993 | Harrison | USA | Left | Left | 6' 6" | 210 lbs | - |
| Skinner, Rich | RF | Free Agent | 33 | 12/07/1985 | Plano | USA | Left | Left | 5' 10" | 193 lbs | - |
| Slootweg, Evan | RF | Riverside Red Bulls | 24 | 04/04/1994 | Oranjestad | ARU | Left | Left | 6' 4" | 210 lbs | - |
| Small, Ed | 3B | Balzac Rams | 27 | 12/27/1991 | Memphis | USA | Right | Right | 6' 0" | 178 lbs | - |
| Smith, Michael | RF | Moose Jaw Ghostbusters | 22 | 01/23/1996 | Dayton | USA | Left | Left | 6' 1" | 200 lbs | - |
| Snidow, Carl | MR | Free Agent | 25 | 05/26/1993 | Northglenn | USA | Right | Right | 6' 0" | 208 lbs | - |
| Snyder, Tommy | SP | Free Agent | 25 | 04/14/1993 | San Antonio | USA | Right | Right | 6' 6" | 240 lbs | - |
| Solano, Lúcio | SP | Menlo Maniacs | 24 | 05/09/1994 | Barinas | VEN | Right | Right | 6' 1" | 230 lbs | - |
| Solís, Enrique | SP | Bismark Border Guards | 22 | 07/01/1996 | Coacalco | MEX | Right | Right | 6' 3" | 220 lbs | - |
| Sosa, Santiago | LF | San Diego Smashers | 29 | 11/03/1989 | Managua | NCA | Right | Left | 6' 1" | 185 lbs | - |
| Soucy, Ross | CF | La Crosse Loggers | 26 | 03/16/1992 | Ottawa | CAN | Right | Right | 6' 1" | 215 lbs | - |
| Spivey, Ed | MR | Free Agent | 26 | 03/12/1992 | East Islip | USA | Left | Left | 6' 3" | 190 lbs | - |
| Stanley, Gerry | MR | Red Deer Wranglers | 28 | 06/06/1990 | Avarua | COK | Right | Right | 6' 3" | 240 lbs | - |
| Sternfeld, Conz | MR | Free Agent | 28 | 09/20/1990 | Gifhorn | GER | Switch | Left | 5' 10" | 198 lbs | - |
| Stewart, Josh | MR | Oakland Giants | 32 | 09/08/1986 | Chicago | USA | Left | Left | 6' 5" | 213 lbs | - |
| Stone, John | RF | Culver City Extras | 26 | 03/02/1992 | Belche | USA | Right | Right | 6' 1" | 185 lbs | - |
| Strickland, Joey | SP | Riverside Red Bulls | 25 | 02/22/1993 | Highland Park | USA | Right | Right | 6' 3" | 235 lbs | - |
| Summers, John | C | Bismark Border Guards | 24 | 01/20/1994 | Temple Terrace | USA | Left | Right | 6' 1" | 225 lbs | - |
| Swanson, Michael | 3B | Bismark Border Guards | 26 | 01/07/1992 | Southfield | USA | Right | Right | 6' 0" | 175 lbs | - |
| Sweet, Curt | MR | Culver City Extras | 25 | 04/23/1993 | Freehold | USA | Switch | Left | 6' 0" | 185 lbs | - |
| Swinson, Chris | CF | San Diego Smashers | 25 | 11/01/1993 | Harbour Heights | USA | Left | Left | 6' 3" | 195 lbs | - |
