Aguiar will miss the entire 2025 season after undergoing Tommy John surgery, Mark Sheldon of MLB.com reports.

The Reds placed Aguiar on the 15-day injured list Tuesday with a right shoulder sprain.

Aguiar (2-1) took the loss Thursday against Atlanta, allowing seven runs on six hits and two walks over four innings. He struck out four.

Aguilar (2-0) picked up the win Friday, giving up three runs on three hits and two walks over 6.1 innings in an 8-4 victory over the Twins. He struck out four.

Aguiar did not factor into the decision Sunday, allowing two hits and two walks over 4.2 scoreless innings against the Mets. He struck out two.

Aguiar didn't factor into the decision Monday against Houston, allowing two runs on two hits and two walks across 2.2 innings. He struck out two.

Aguiar will start Monday's game against the Astros, Charlie Goldsmith of The Cincinnati Enquirer reports.

Aguiar is scheduled to start Saturday's game against the Pirates at PNC Park, Gordon Wittenmyer of The Cincinnati Enquirer reports.

The Reds selected Aguiar's contract from Triple-A Louisville on Monday, Charlie Goldsmith of The Cincinnati Enquirer reports.

Aguiar is expected to start Monday against Toronto, C. Trent Rosecrans of The Athletic reports.