The A's new GM could make some shocking trades this winter.

Athletics manager Mark Kotsay speaks to reporters before his team's game against the Toronto Blue Rays on Tuesday at Sutter Health Park.Mark Kotsay gives injury update, return timetable on Athletics DH Brent Rooker originally appeared on NBC Sports Bay Area

Athletics designated hitter and outfielder Brent Rooker had season-ending left knee surgery Friday, a tough loss of a leader both on and off the field for the club. Dr. Tim McAdams and Dr. Mike Freehill performed the debridement procedure of Rooker's articular cartilage tear at Stanford Orthopedic Hospital in Redwood City and also removed loose bodies. Rooker, who has had an injury-plagued year after he played in all 162 games last season, had received a cortisone shot last month for the knee and was rehabilitating from a bone bruise before seeking further evaluation at Stanford.

The Athletics are 41-46 going into their three-game series against the Miami Marlins. Despite their losing record, though, they still have eyes on a potential postseason spot. Over halfway into the season, they are just three games back from the lead in the American League West and a wild card spot.

James Schiano discusses Brent Rooker's season-ending knee surgery and the effect it will have on playing time for some of the Athletics' bats.

Athletics designated hitter Brent Rooker will undergo surgery to repair a cartilage tear in his left knee and miss the remainder of the season.

Brent Rooker's injury does not solve Seattle's problems, but it does give the Mariners one less division headache to manage.

The A's will be without their All-Star hitter for the remainder of 2026.

Athletics manager Mark Kotsay speaks with the media before his team's game against the Los Angeles Dodgers on Wednesday at Sutter Health Park.Athletics' Mark Kotsay reveals Brent Rooker to have knee surgery, out for season originally appeared on NBC Sports Bay Area