Tight end Zach Miller of the Bears suffered a serious knee injury on Sunday and had surgery for an artery tear the same day.

In the third quarter, Miller caught an apparent 25-yard touchdown pass in the end zone. As he landed, he became tangled with Saints defensive back Rafael Bush. Miller’s left leg could be seen bending in the wrong direction as he landed. After landing, he rolled over before dropping the ball.

The play was reviewed and the pass was ruled incomplete. The call was controversial, but the Bears had other concerns: Miller was grievously injured.

Teammates quickly realized the seriousness of the injury and rushed to his side. He left the field on a cart and was taken to the hospital.