THOUSAND OAKS, Calif. -- Los Angeles Rams defensive end Robert Quinn watched practice in sweatpants and a beanie late Tuesday afternoon, one day after being in the hospital with a non-football-related illness.

Quinn was discharged early on Tuesday and was at the team facility for morning meetings. Rams coach Jeff Fisher didn't provide specifics on Quinn's condition, but said they "got good results back" and that he will be "day-to-day" with regard to playing in Sunday's home game against the Miami Dolphins.

"It was an unfortunate situation and you never want to hear that, so it's good to see him back on the sideline, healthy and doing well," Rams linebacker Mark Barron said.

"It felt good," defensive tackle Michael Brockers added, "because a lot of information was kind of held back, and people didn't really want to start a panic or whatever. It was good to see him. He was all smiles; he was really up to speed for a guy who was just hospitalized."

Quinn played in 83 percent of the defensive snaps during a 9-6 win over the New York Jets on Sunday, an uncommonly high number that was partly due to fellow defensive end Eugene Sims going through concussion protocol.

On the bus ride back from LAX late Sunday night, he sat behind Fisher and went over some film with him. But Quinn checked himself into a local hospital shortly thereafter. Fisher said it was "highly unlikely" that Quinn's condition was related to the benign brain tumor he was diagnosed with in high school, which caused severe headaches and prompted doctors to drain excess fluid from his skull.

But his teammates were concerned.

"I know Rob's history," Brockers said. "I know about the tumor and stuff, so I was really scared that something came back or whatever, and wanted to pray for him and let him know that everything was going to be OK. But at the same time, I just didn't know enough to understand the situation. It was good to just see him this morning and talk to him."

Quinn, the 14th overall pick out of North Carolina in 2011, racked up 40 sacks from 2012 to '14, third most in the NFL during that time. The 26-year-old played in eight games last season before ultimately undergoing back surgery and has played in seven of the Rams' nine games this year, compiling two sacks, two forced fumbles and two pass deflections.

Barron didn't notice any difference on Tuesday.

"He's Robert Quinn," Barron said. "He's doing what he always does. To see him back, after his situation, it's good."