Matt Hasselbeck is expected to replace injured Jake Locker as the Tennessee Titans' starting quarterback for this week's game against Minnesota, CBSSports.com reported Monday. Locker underwent an MRI on his injured right shoulder on Monday and is expected to miss at least a week or two, according to the report. The extent of the injury is still not completely known. Locker, who had injured his shoulder earlier this season, attempted two passes Sunday before being knocked out of the game. The Tennessean reported afterward this shoulder injury was believed to be worse than the previous one. Hasselbeck replaced Locker and completed 17 of 25 passes with two touchdowns and two interceptions in the 38-14 loss to Houston. Locker has complete 63.2 percent of his passes with four touchdowns and two interceptions this season.