Detroit Lions cornerback Terrion Arnold is optimistic that he’ll be able to play through the groin injury he sustained in Sunday’s 27-13 season-opening loss at Green Bay. Arnold, who sustained the injury early in the game, remained in the game in the first half before he was labeled as questionable to return and quickly downgraded to out in the third quarter. “Early in the game, I was kind of coming out my break and I kind of bothered it a little bit and then it was just something I kept trying to play through,” he told the Detroit Free Press. Arnold, 22, said after the game that he’ll get an MRI on Monday to confirm the severity of the injury.