The former Cavalier was with the Cleveland Indians for Game One of their series at Camden Yards.
Reynolds played the past two seasons in Baltimore, and it was all smiles before the game Monday.
Batting practice was canceled, but Reynolds was on the field catching up with members of the Orioles staff, and getting a hug and a handshake from O's manager Buck Showalter.
"It's good to be back," says Reynolds. "I miss playing here. I miss the guys. I miss the city. But where I'm at now is a good situation. Great team, great manager. We're winning games. It's a good new chapter for me."
Reynolds hit sixty home runs and knocked in 155 RBI in two years with the Birds.
He batted .221 both years.
The six-year veteran signed as a free-agent in Cleveland this offseason after being non-tendered by Baltimore, and has already hit fourteen home runs.
Reynolds says taking the field from the visitors dugout is a strange feeling.
"It's easy to say it's just another game, but it's going to be weird playing against these guys that I have such great relationships with," says Reynolds. "I'm going to roll with it, and have fun, and whatever happens, happens."
Reynolds went 1-for-2 with two walks in the Indians 5-2 win against the Orioles Monday night.