Locker was injured in the third quarter on Sunday against the New York Jets when defensive lineman Muhammad Wilkerson hit him following a throw. On the way down, Locker was hit from behind by Quinton Coples before staying down and holding his hip.
Locker was carted off the field and taken to a hospital, according to The Tennessean. Ryan Fitzpatrick is the backup quarterback for Tennessee, and he could be pressed into duty for the foreseeable future.
"The reason I was brought here was to help Jake out and be ready for a situation like this if it came up," Fitzpatrick said. "If (Locker) is not in there, this is why they brought me here - no longer to tutor Jake and help him along, but to help win football games for this team."
After replacing Locker, Fitzpatrick completed 3 of 8 passes for 108 yards and a touchdown. Locker was having a career day before getting hurt, tossing three touchdowns in the first half.