Getty Trenton Irwin signed with the Jags in June after spending the 2024 campaign with the Bengals and Panthers. The Jacksonville Jaguars close out their preseason August 23 against the Miami Dolphins   at  Hard Rock Stadium. For some players, the matchup represents more than fine-tuning before Week 1. It’s a career crossroads. For a pair of Jaguars fighting on the roster bubble, every snap carries the weight of survival. One is a once-promising draft pick in Chad Muma , whose career has yet to