Buffalo Bills rookie running back Devin Singletary suffered a hamstring injury during the second half of his team’s win over the New York Giants on Sunday, and the Bills seem a bit concerned.

“Still don’t know definitively at this point what’s going on there,” said head coach Sean McDermott, according to Jay Skurski of The Buffalo News.

McDermott added that the Bills are “still gathering information” on Singletary and that he is currently day-to-day.

Singletary carried the ball six times for 57 yards and a touchdown before exiting on Sunday afternoon. He has totaled 127 yards on 10 attempts while catching five passes for 28 yards through the first two weeks of the season.

The 22-year-old, who played his collegiate football at Florida Atlantic, was selected by Buffalo in the third round (74th pick overall) of the NFL Draft back in April.

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He spent three years at Florida Atlantic, arriving at the school in 2016. He made an immediate impact, rushing for 1,021 yards and 12 touchdowns while averaging 6.7 yards per carry during his freshman season. In addition, he hauled in 26 receptions for 163 yards.

Then, the following year, Singletary was significantly more productive, racking up 1,918 yards and a ridiculous 32 scores on the ground, registering 6.4 yards per attempt.

The Deerfield Beach, Fl. native then capped off his NCAA career by recording 1,348 yards while reaching the end zone 22 times as a rusher during his junior campaign, logging 5.2 yards per carry.

The Bills have gotten off to a 2-0 start and will play host to the Cincinnati Bengals next Sunday.

Should Singletary be unable to go, T.J. Yeldon will likely get the nod as the starting running back.