DETROIT -- Detroit Lions defensive coordinator Kelvin Sheppard made one thing abundantly clear when speaking to reporters Thursday: he’s not in the excuse-making business.

During Sunday’s 27-13 loss to the Green Bay Packers, cornerback Terrion Arnold sustained a groin injury, leaving the game for good in the third quarter. The second-year defender later said the injury occurred on the Packers’ second drive, which ended in a field goal. While Arnold insisted the injury didn’t affect him, he was in coverage on two consecutive plays during Green Bay’s next drive that led to a 17-3 lead in the second quarter.

Asked if Arnold’s injury played a role in the coverage breakdown, Sheppard’s response was blunt.

“If you’re injured, come out of the game. We’re not making any excuses,” Sheppard said.

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