Defensive end Frank Alexander has spent plenty of time on the Panthers’ practice fields over the last few months, but he always had to leave by the time practice started. So when Alexander walked onto the field Wednesday to be with his teammates for the first time since late August, he couldn’t hide his excitement.

“I couldn’t stop smiling. I was trying to stay serious, but people were like, ‘Go ahead and let it out. Just smile,’” Alexander said.

The third-year player was suspended the first 14 games of the season after twice violating the NFL’s substance abuse policy. He was reinstated Monday, and two days later, he celebrated his 25th birthday by trying to convince coaches he’s ready to contribute.

“I felt good, but there’s a difference in football shape rather than just working out by yourself,” Alexander said. “I felt kind of rusty a little bit on the pass rush, but other than that I just had a lot of energy. I was just happy to be back out there on the field with my teammates.”

The Panthers have a one-week exemption to watch Alexander practice before they decide if they want to add him to the active roster. Coach Ron Rivera said a decision on whether to activate him for the Browns game will likely come Saturday.