Jonathan Mingo left the Cowboys’ preseason game against Baltimore with a right knee concern, triggering an MRI to check for a potential posterior cruciate ligament injury. He had just posted a 49-yard grab earlier in the drive before securing a key end-zone target that didn’t connect, a sequence that underscored his big-play ability but also the fragility of depth at receiver for Dallas. Joe Milton’s uneven demonstrates on the next drive added to the Cowboys’ unease as they head into their final dress rehearsal. Several other Dallas defenders also left the field with health issues, including Christian Matthew (groin) and Bruce Harmon (knee), while Princeton Fant exited with a left shoulder injury, thinning the roster across multiple positions. Baltimore, meanwhile, used the opportunity to test a wider pool of backups and depth players, highlighting how quickly preseason evaluations can tilt the edge in late August. The MRI result will shape the Cowboys’ early-season plans at wide receiver and the immediate timetable for Mingo, with Milton’s backup QB race also hanging in the balance as Dallas looks to stabilize behind the presumptive starter.