ARLINGTON, Texas (AP) — Detroit Lions defensive end Aidan Hutchinson was carted off the field with a serious injury to his left tibia on a sack of Dallas’ Dak Prescott.

Lions coach Dan Campbell said after Sunday’s 47-9 win over the Cowboys that Hutchinson will stay in the Dallas area for surgery. Hutchinson’s leg appeared to snap above the ankle when it collided with the left leg of teammate Alim McNeill as Hutchinson was pulling Prescott down in the third quarter.

There was a delay of about 10 minutes as medical personnel tended to Hutchinson while players from both teams made a large circle around him.

Coaching scare

DENVER — Jim Harbaugh listened to his heart when he began to feel a little bit off in pregame warmups.

The Los Angeles Chargers coach went into the medical tent and then to the locker room in the first quarter Sunday to get checked out for an irregular heartbeat. An EKG showed his heart was back in normal rhythm and he returned to the sideline with his team already up 3-0.

His team didn’t miss a beat in a 23-16 win over the Denver Broncos.

For quite a while, Harbaugh said he’s dealt with atrial flutter, a condition that can cause the heart to beat too quickly. He had an ablation procedure in 1999 to treat the irregular heart rhythms. He also had another one in 2012 when he was coaching the San Francisco 49ers.