The New Orleans Saints will be without running back Alvin Kamara for the rest of their Thursday Night Football matchup against the Atlanta Falcons.

Kamara had to leave the field during the opening drive after suffering a blow to his head on a run. He was sent to the medical tent, and then went to the locker room to be evaluated for a concussion. The Saints announced that he does have a concussion and will not be returning to the game.

His performance since the Saints’ traded running back Adrian Peterson has him in the running for Offensive Rookie of the Year. Going into Thursday night Kamara has rushed for 606 yards, and 7 touchdowns while averaging 7 yards-per-carry, along with hauling in 59 passes for 614 yards and 4 touchdowns.

The Saints also lost guard Senio Kelemente for the rest of the game with a concussion. Linebacker A.J. Klein, defensive end Trey Hendrickson and safety Kenny Vaccaro are questionable to return with injury.

Kamara, and improvement on defens,e are the main reasons for the Saints becoming one of the best teams in the NFL after three consecutive 7-9 seasons. Going into their Thursday night matchup against the Falcons, they were 9-3 on the season. They currently lead the Falcons 17-10 midway through the third quarter.

The Saints’ final three games are at home against the New York Jets and Falcons, with a season-finale on the road against the Tampa Bay Buccaneers. They should be able to hold onto a playoff berth, but it will be hard to overtake the Minnesota Vikings for the No. 2 seed without Kamara.

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