Rams coach Jeff Fisher said Monday that running back Isaiah Pead “is back in the building’’ and will resume practicing with the team on Wednesday.

Pead, a second-round selection by the Rams in the 2012 NFL Draft, sat out the Arizona game while serving a one-game suspension for violating the NFL’s substance-abuse policy.

The Rams must make a roster move today to make room for Pead on the 53-man roster.

As a rookie, Pead had 212 yards on 10 kickoff returns, ran for 54 yards and caught three passes for 16 yards. During the preseason, Pead ran 26 times for 86 yards, caught three passes for 26 yards and had 102 yards on five kickoff returns.

When asked if Pead would play Sunday, Fisher responded, “We’ll see.’’

REYNOLDS GETS A CHANCE

After two seasons on the practice squad, running back Chase Reynolds made his pro debut Sunday. He was in on 17 special teams plays and was credited with a tackle.

“It was exciting to be out there and be part of something on Sunday that was two years in the making,’’ the 24-year-old said. “Took a minute to take a good look around. For me, it’s work every day because there’s no telling how long it’ll last. As coach said in the locker room, it’s hard to make this team, but it’s harder to stay on.’’

Reynolds went from playing eight-man football in high school to becoming one of the most prolific runners in University of Montana history. The 6-foot, 205-pounder has shown a knack for stepping up his game in preseason finales with the Rams.

He scored the game-winning touchdown in a 24-17 win in Jacksonville in 2010, ran for 48 yards on eight carries as the Rams knocked off Baltimore 31-17 a year ago. This season, in a 24-21 comeback win over Baltimore to close out the preseason, he caught a screen pass, broke three tackles and went 17 yards for the game-winning touchdown with 2:40 to play.

Reynolds said he tried to approach Sunday as “just another game.’’

“Actually, I was pretty calm. I was focused in, knowing what I had to do,’’ he said. “I just took it as another preseason game for me because in the preseason all you’re trying to do is play to the next level and do everything you possibly can do. I just wanted to go out and do what I had to do.

“On Sunday, the level definitely turns up a little bit. I was looking forward to get those first couple of hits in.’’

With Pead returning from suspension, Reynolds could be on the bubble again.

“I can’t worry about that,’’ he said. “I just have to keep grinding, to do what I gotta do. If it happens, I’ll deal with it and if it doesn’t, I’ll treat it as a blessing and I’ll keep fighting and hopefully secure my spot.

“With anything in life, there comes a point when you look at yourself in the mirror and wonder if it’s worth it. Today, it was worth it. It was awesome.’’

Joe is a St. Louis Post-Dispatch sportswriter.

Joe Lyons is a Rams reporter for the St. Louis Post-Dispatch.