CSN Bay Area "Sonny Gray underwent successful thumb surgery the Oakland A’s announced Friday and the right-hander is expected to be ready for the start of spring training. Gray had a screw inserted into his left thumb to stabilize a fracture suffered during Game 5 of the American League Division Series. He..." October 19
SB Nation "Josh Reddick Sonny Gray and Jarrod Parker should all be ready for Spring Training in 2014. The results are in for the Oakland Athletics: It'll be surgery for outfielder Josh Reddick and pitcher Sonny Gray and rest for pitcher Jarrod Parker. All three players should be ready for Spring Training..." October 14
SB Nation "Athletics starting pitcher Sonny Gray suffered a broken thumb while fielding a ball in the last game of the 2013 ALDS. Athletics pitcher Sonny Gray who took the loss in Game 5 of the ALDS against Detroit broke his thumb during the game on Thursday night according to Joe Stiglich of Comcast..." October 11
MLB.com "The A’s are counting on a rookie to take down the Tigers in Thursday’s decisive Game 5 of the American League Division Series with 23-year-old Sonny Gray getting the nod over veteran Bartolo Colon. Oakland manager Bob Melvin announced the decision on a conference call Wednesday afternoon less..." October 10
It's Colon on Friday then Gray Parker and Straily. #Athletics
Sonny Gray is, indeed, getting called up. He'd likely be getting feet wet in bullpen, from what I can tell; there are no rotation spots.