Two-time NFL MVP Lamar Jackson sparks serious injury concerns amid awful start to the season

Baltimore Ravens superstar Lamar Jackson has sparked serious injury concerns after he did not practice on Wednesday following a hamstring ailment suffered against the Kansas City Chiefs. 

The Ravens are a disappointing 1-3 to start the NFL season, with losses to the Chiefs, Detroit Lions, and Buffalo Bills. 

Now, Baltimore's best player could miss time with the franchise at its lowest point in several years.

It is unclear exactly when Jackson hurt his hamstring, as he was replaced by Cooper Rush during the third quarter only after a commercial break. 

It would be Rush taking Jackson's place if the two-time MVP is unable to play on Sunday against the Houston Texans. 

On Monday, Baltimore head coach John Harbaugh said he had a 'pretty good feel on all the injuries' on the team, including Jackson, without going into specifics.

The Ravens, under NFL rules, will have to give an injury designation to Jackson by Friday, where the first public information will be known about how badly he is hurt.  

After Sunday's game, Baltimore will face the Los Angeles Rams in a tough test before heading into their bye week. 

Rush is the only other quarterback on the Ravens roster, with Tyler Huntley likely being elevated from the practice squad should Jackson not play. 

Jackson himself has been in good form this season, throwing for 10 touchdown passes with only one interception.  

Rush had played in 40 NFL games in his career, as the longtime backup for Dak Prescott and the Dallas Cowboys, holding a 14-5 record as a starter.