The Athletics sent Colby Thomas to Triple-A Las Vegas on July 31, 2026, a move that came as they selected Jonathan Ornelas and shifted their roster again. Thomas was optioned off the active roster, while the club opened space with the addition of Ornelas.
That is why Thomas is drawing attention today: the roster churn did not just change the infield picture, it pushed a young outfielder back to Vegas after the club made a corresponding move. For readers watching the Athletics’ deadline activity, this was the cleanest immediate change, and it happened on the same day the team had to fit a new player onto the roster.
The transaction also lands in the middle of a broader July 31 shakeup. At the same time the Athletics moved Thomas, they designated Chen Zhong-Ao Zhuang for assignment, trimming the roster while they worked through the deadline period. A team normally has five days to work out a trade after designating a player for assignment, and with the deadline three days away, every spot had added weight.
That is also where the pushback comes in. One reaction to the move argued that Thomas should have stayed up because he needed more playing time. The club, though, chose the opposite path: it sent him out and brought Ornelas in. The decision suggests the Athletics valued roster flexibility over giving Thomas another run on the active roster, even if some around the move saw more at-bats as the better answer.
Thomas now heads back to Triple-A Las Vegas, where he will try to force another look. For the Athletics, the more immediate question is whether this was only a short-term shuffle or the start of a larger reset as they balance the active roster against the clock of the deadline.
