Each week of the NFL season, Yardbarker will be monitoring players who have suffered notable injuries.

From a Baltimore Ravens quarterback to a Philadelphia Eagles offensive lineman, here are five players we're tracking after Week 4:

Baltimore Ravens QB Lamar Jackson

Jackson — a two-time MVP — exited the third quarter of Sunday's road game against the Kansas City Chiefs with a hamstring injury. The QB finished 14-of-20 passing for 147 yards, one touchdown and one interception.

"Nothing looks season-ending by any stretch for anybody," Ravens head coach John Harbaugh said following the 37-20 loss, via former Ravens editor Sarah Ellison . "But we'll have to look at those injuries tomorrow and see where we are going forward."

Jackson has stayed healthy over the past two seasons but bat

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