Joe Mantiply is included in the projections for the upcoming season, highlighting his potential role in the Diamondbacks' bullpen. His performance will be crucial as the team navigates the challenges of a full MLB season, with expectations set based on his past contributions and the analytical insights provided by ZiPS and Steamer.

Joe Mantiply is part of a Diamondbacks bullpen that struggled in 2024, ranking No. 26 in MLB with a 4.41 ERA. However, he, along with the other relievers, maintained an individual ERA below 4.00, indicating potential for improvement and effectiveness moving forward.

Joe Mantiply has pitched 29.1 innings with Moreno and recorded a 4.30 ERA and .664 OPS allowed. His performance declines significantly with Herrera, where he has a 7.11 ERA over 12.2 innings, and he also struggles with Del Castillo, throwing six scoreless innings. This pattern indicates that Mantiply's effectiveness is closely tied to the catcher he works with, highlighting the potential impact of catching choices on his performance.

Joe Mantiply struck out Shohei Ohtani to end the sixth inning, highlighting his effectiveness in a critical moment despite the Diamondbacks facing a tough situation.

Joe Mantiply took the loss for Arizona after being brought in to replace Dylan Floro. He struggled when he uncorked a wild pitch that allowed the go-ahead run to score, contributing to the team’s efforts falling short in a tightly contested game.