Whether or not the veteran quarterback is healthy enough to start against the winless Indianapolis Colts this weekend remains to be seen.
Munchak said Monday he will wait and see how Hasselbeck is Wednesday, when the Titans (7-6) next practice. The coach said the team hadn't heard anything yet on Hasselbeck's MRI exam but assumes the injury is on the mild side.
"We have to win these three games," Munchak said. "If Matt's healthy, then Matt will quarterback us. As far as Jake, he'll have plenty of time to be our guy. So we wouldn't put him in just to give him experience. We know we can win with him in there. We feel real good about what we've seen in just the two games he's had a chance to play.
"Our thing is we have three huge games ahead of us, and we got to take care of all three of those if we want to play anymore."
Hasselbeck was hurt early in the second quarter of Sunday's 22-17 loss to the New Orleans Saints, though he filled in for Locker with one completion in the fourth quarter before hopping back to the sideline.
Hasselbeck was among six or seven Titans who had MRI exams Monday, with backup running back Javon Ringer's hand injury probably the most serious. Munchak said he didn't have information yet, but The Tennessean reported that Ringer's hand was broken and he's headed for surgery and season-ending injured reserve.
Munchak said he believes rookie linebacker Akeem Ayers' shoulder is a minor injury. Linebacker Gerald McRath (left knee/ankle) was carted off the sideline, and wide receiver Nate Washington played despite not practicing all week because of his left ankle. Cornerback Jason McCourty, deactivated against New Orleans with a concussion, was cleared Monday and will practice Wednesday.
The Associated Press contributed to this report.