Titans' quarterback Vince Young was walking around on crutches following the team's 17-10 win over the Jaguars on Sunday afternoon, according to Associated Press. Young injured the knee in the fourth quarter of the team's season-opening victory. He will have tests to determine the severity of the injury. "The biggest concern that I have right now not knowing, I don't think it is serious about Vince," Coach Jeff Fisher said. "We are going to do some studies, some tests on his knee."