The Redskins lost right tackle Jammal Brown before Sunday’s game even began and lost fullback Mike Sellers early in the 34-27 loss to New England.

Brown said the poor field conditions at FedEx Field — the Army-Navy game was played at the stadium one day earlier — contributed to his groin injury, which he aggravated during pregame warmups.

“I went to pull and my left leg slid with the dirt as I was pushing off,” he said. “I almost did the splits. I just kind of knew right away.”

Brown never took the field Sunday and was replaced by Tyler Polumbus. The injured left groin is the same one Brown hurt against San Francisco last month. He said he’ll have an MRI exam on Monday to determine the extent of the injury.

“We’ll see,” he said. “It’s already feeling better from when it happened a couple hours ago.”

Sellers injured his right elbow in the first half and watched most of the game wearing a sling on the sidelines.

“I don’t think it’s any more than a hyperextension,” Redskins Coach Mike Shanahan said, “but I’ll have to wait and see on that one.”

More on Redskins-Patriots:

Redskins’ can’t keep up despite season-best offensive showing

Game summary: Patriots 34, Redskins 27