GLENDALE, Ariz. – Brittan Golden is trying to make sure he's in the conversation when it comes time to make roster decisions for the Arizona Cardinals at wide receiver.

Training camp is only two days old, but Golden stood out in the Cardinals' second practice with a pair of touchdown catches, one diving into the end zone.

Golden, a third-year pro, made the Cardinals as an undrafted free agent in 2013 and has appeared in five games.

"It's always good to have good catches but you can't take that into effect every day. You've got to come out every day with the mindset that you're going to get better every day," Golden said. "We'll judge the tape. I don't know, I could have had a bunch of screw-ups I don't even know about yet. But I'm just trying to take it day by day."

Golden, 5-foot-11 and 186 pounds, will also be looked at as a return man during camp.

A day after losing three players to injury -- though they don't appear to be too serious -- the Cardinals might also be down a running back on Monday. Rookie David Johnson, the team's third-round pick this year, pulled up on a long run down the sideline and had to be examined by trainers. He walked off the field toward the locker room and didn't return to practice.

In Johnson's place, Kerwynn Williams saw more snaps. Williams was elevated from the practice squad late last season and ran for 100 yards in his first NFL game.

Other standouts in Sunday's practice included defensive back Tyrann Mathieu, who intercepted a pass on the last play of red zone drills and knocked down two others. Rookie receiver J.J. Nelson continued to look good, as did receiver Michael Floyd, and Carson Palmer routinely completed throws against six- and seven-defensive back sets, threading the ball between defenders.

Palmer and new tight end Jermaine Gresham were the last two players on the field when practice was over, apparently discussing the offense and how they'll click when Gresham is able to start practicing. Gresham had offseason back surgery.