India, Oct. 5 -- Baltimore Ravens quarterback Lamar Jackson is set to undergo an MRI on his injured ankle after leaving the stadium Sunday in a walking boot, according to Adam Schefter.

The latest development comes less than 24 hours after Jackson exited Baltimore's 24- 18 victory over the Tennessee Titans and raises fresh questions about his availability for Week 5.

Jackson suffered the ankle injury late in the first half while attempting to escape a sack from Titans defensive end Jermaine Johnson II.

Johnson landed on Jackson as the quarterback went down, and Jackson did not return for the second half.

The Ravens initially listed Jackson as questionable to return, but backup quarterback Tyler Huntley took over when Baltimore opened ...