Mexican Winter League
- A's infielder Adam Rosales missed a significant part of the 2011 season with a leg injury. He is suiting up for the Aguilas de Mexicali this fall/winter to help recoup those lost at-bats. Through his first two games, he is two-for-seven with two runs scored and a walk.
- A's right-handed pitching prospect Andres Avila had a rough Winter League debut on Wednesday. He took the loss for the Caneros de los Mochis in relief. Avila allowed three runs (two earned) on three hits. He didn't walk or strike-out anyone. Avila pitched for the A's Rookie League team this summer.
- A's left-handed pitching prospect Carlos Hernandez will be suiting up for the Tomateros de Culiacan this fall/winter. Hernandez threw 152 innings spread over 27 starts for Double-A Midland and Triple-A Sacramento this season.
Venezuelan Winter League
- Right-handed reliever Jeiler Castillo is on the roster for the Leones del Caracas. Castillo was acquired by the A's last off-season in the minor league Rule 5 draft. He pitched for Low-A Burlington and short-season Vermont.
- A's prospects Leonardo Gil and Douglas Landaeta are also on the Caracas roster. Gil played the entire regular season with the High-A Stockton Ports. Landaeta suited up for Low-A Burlington during the regular season.
- The A's have yet to clear him to pitch this winter, but Guillermo Moscoso is on the reserve roster for the Leones del Caracas. The A's want to limit the right-hander's innings this off-season after he pitched 174.1 innings between Triple-A and the big leagues. The native of Venezuela was surprisingly effective for the A's this season, posting a 3.38 ERA in 126 innings.
- Young A's centerfield prospect Jonesy Zarraga is on the roster for the Navegantes del Magallanes. The 19-year-old appeared in 34 games for the A's Dominican Summer League squad during the regular season.
- A's first-base prospect Chris Carter is expected to suit up for the Tiburones de La Guaira this winter. Carter was slated to appear in the Venezuelan Winter League last year, but a thumb injury he sustained at the tail-end of the 2010 regular season derailed him from ever fulfilling that commitment. Carter missed half of the 2011 season after re-injuring that thumb, so he will be looking to make-up for lost at-bats.
Arizona Fall League
- A's outfield prospect Michael Choice became a father this week and has been away from the Phoenix team. He last appeared in an AFL game on October 8. He won co-Player of the Week honors for the first week of the season, batting .471 with three homers in four games.
- A's outfield prospect Grant Green is one-for-his-last-seven, and he has seen his average drop to .240 and his OPS to 699. Green did record his first outfield assist this week, however.
- A's left-handed pitching prospect Anthony Capra recovered from his nightmarish first AFL outing to throw a scoreless inning in his second appearance. He struck-out one and didn't allow a base-runner.
- A's right-hander Tyson Ross and right-handed pitching prospect Murphy Smith each made their second starts this week. Ross allowed a run in two innings of work. He struck-out one and didn't walk a batter while allowing two hits. Smith once again ran into trouble during his third inning of work and he allowed six runs in three innings. Smith has given up three homers in 5.2 innings.
- A's reliever Andrew Carignan has continued to pitch well for the Desert Dogs. He notched another scoreless inning this week. Carignan did walk two with two outs, but he has yet to allow a hit in 3.1 innings and he has struck-out six.
- A's prospects Dusty Coleman and Ryan Ortiz have yet to see a lot of playing time. Ortiz has reached base with three walks and a hit in three games, but he is 0-for-his-last-six. He does have two RBIs. Coleman went 0-for-three with a walk in his only start thus far this week, but he is three-for-10 overall with a homer and two RBIs.