7:45 AM - Simon Castro (Oak) was released by the Athletics on Thursday.

3:27 PM - Simon Castro (Oak) agreed to a minor-league deal with the Athletics on Thursday that includes an invitation to spring training, Susan Slusser of the San Francisco Chronicle reports.

8:10 AM - Simon Castro (Oak) allowed two earned runs on three hits over two-thirds of an inning in Monday's 8-3 win over the Tigers.

8:13 AM - Simon Castro (Oak) fired two scoreless innings in Tuesday's 8-2 loss to the Angels, allowing one hit and three walks. He struck out two.

8:49 AM - Simon Castro (Oak) (1-2) gave up a game-winning solo home run for his only hit and earned run over two-plus innings in Wednesday's 8-7 extra-inning loss to the Orioles. He also issued a walk and recorded three strikeouts.

10:30 AM - Simon Castro (Oak) fired 2.1 scoreless innings in Sunday's 6-5 extra-inning win over the Twins, allowing a hit and a walk while recording three strikeouts.

11:18 AM - Simon Castro (Oak) fired two scoreless innings in Saturday's 6-3 loss to the Twins in which he recorded two strikeouts.

10:32 AM - Simon Castro (Oak) Athletics selected Castro's contract from Triple-A Nashville on Sunday.

11:47 AM - Simon Castro (Oak) a hard-throwing non-roster invitee, has made an impression with his aggressiveness and performance over his first two spring appearances, Jane Lee of MLB.com reports. "He's pretty passionate about what he does, and when he came to the mound, he was pretty vocal," A's manager Bob Melvin said. "He was telling the guys, 'Let's go! Right now, let's go!' I haven't heard that too many times out of pitchers, let alone in Spring Training, so he impressed me with his eagerness to pitch and certainly was not scared and got the outs we needed.

10:23 AM - Simon Castro (Oak) signed a minor league contract with Oakland on Thursday that includes an invite to spring training, CSN Bay Area reports.

10:36 AM - Simon Castro (Col) was optioned to Triple-A Albuquerque on Thursday, Nick Groke of The Denver Post reports.

12:38 PM - Simon Castro (Col) signed a minor league contract with the Rockies on Thursday that includes an invitation to spring training.

7:22 AM - Simon Castro (Col) tossed a scoreless inning in Wednesday's 3-1 loss to the Diamondbacks.

10:35 AM - Simon Castro (Col) contract was purchased from Triple-A Albuquerque prior to Sunday's game against the Mets, MLB.com's Thomas Harding reports.

11:06 AM - Simon Castro (Col) signed RHP Simon Castro to a minor league contract.

10:33 AM - Simon Castro (CWS) Sox sent RHP Simon Castro outright to Triple-A Charlotte.

9:09 AM - Simon Castro (CWS) Sox recalled RHP Simon Castro from Triple-A Charlotte.