AP

After rookie running back Kenneth Dixon hurt his knee during Saturday night’s game against the Lions, Ravens coach John Harbaugh said that he didn’t think it was an overly serious injury.

That’s easy to say when it isn’t your knee, but Dixon’s injury isn’t a season ender. It will keep him out of the lineup for the start of his rookie season, however.

According to multiple sources, Dixon has been diagnosed with a MCL tear that is expected to keep him off the field for at least four weeks. Dixon, who dealt with an MCL sprain earlier this summer, does not need surgery to repair the injury.

Dixon was a fourth-round choice in April and was seeing time with the first team behind Justin Forsett during the preseason. Terrance West and Buck Allen are other options on the active roster while Lorenzo Taliaferro has been on the PUP list because of a foot injury since the beginning of training camp.