Cooper Kupp suffered a setback in his return from a hamstring injury and is day-to-day, according to Los Angeles Rams coach Sean McVay.

"I think we just take it a day at a time right now," McVay said. "We want to be able to get him back right. We're obviously a much better team when he's available."

Kupp initially suffered the injury on Aug. 1 and returned to practice just last week. McVay was noncommittal about Kupp's availability for the Sept. 10 opener.

"There's a difference between return to play and return to performance," McVay said.

"We want return to performance for Cooper Kupp. We know how special a player, special of a person, and so we want to make sure we are smart with that and getting him back to feeling like the Cooper Kupp we all know and that he's able to play the way that he's capable of, whenever that is. Whether that is Sept. 10th or not, we'll continue to monitor that and control what we can control."