'"As far as this type of injury, it's kind of up in the air," Matthews said. "Most injuries, most broken bones you already know the timetable. You can even Google that stuff and find it. With a chest injury like this, it's kind of more up in the air. They have to gauge it. It's more pain management than anything. When they feel like I'm at a good place where I can go out there and perform but also not put myself at risk of hurting anything else or have the same injury, then they'll feel comfortable throwing me back out there."