The A's designated for assignment two-time All-Star catcher Stephen Vogt, possibly ending the Oakland career of one of their most tenured players.
Also Thursday morning, the A's placed third baseman Matt Chapman on the 10-day disabled list with left knee cellulitis and recalled catcher Bruce Maxwell and first baseman Matt Olson.
"Talking with (GM) David (Forst) and Bob (Melvin) yesterday, it's just one of those things I kind of felt coming for a while but obviously it's never easy," Vogt said on a media conference call. " It's something I understand. I don't like it, but I understand how the game works."
The A's have 10 days to trade or release Vogt or send him to the minors, though it's possible he gets claimed on waivers too.
Vogt is one of the A's most popular players and a clubhouse leader, but has lost playing time recently to Josh Phegley.
On the same day the Oakland A's learned they'd be without Jharel Cotton all season, they reportedly reached an agreement with a familiar face to bolster their pitching depth.
Oakland agreed to a one-year, Major League deal with Trevor Cahill pending the results of a physical, according to MLB.com's Jane Lee.
Cahill, a 2006 A's second-round draft pick, pitched for Oakland from 2009-11. He started 96 games in three seasons with the A's, going 40-35 with a 3.91 ERA and 1.32 WHIP. Since Oakland traded him to the Arizona Diamondbacks in Dec. 2011, Cahill's pitched for six teams.
The 30-year-old won a World Series ring with the Chicago Cubs in 2016, and pitched for the San Diego Padres and Kansas City Royals last season. In 2017, he went 4-3 in 21 appearances (14 starts) with a 4.93 ERA and 1.62 WHIP.
The A's will be without starting pitcher Jharel Cotton for the entire 2018 season as he is set to undergo Tommy John surgery.
Cotton, 26, went 9-10 with a 5.58 ERA in 2017 after a rookie season in which he went 2-0 with a 2.15 ERA in five starts. Leading up to the injury, he was 0-1 with a 3.75 ERA over four appearances in spring training.
Watch Cotton react to the news: