ST. PETERSBURG, Fla. -- The Tampa Bay Rays placed pitcher Tyler Glasnow on the 10-day injured list Saturday because of a mild right forearm strain that is expected to sideline him four to six weeks.

Glasnow left during the sixth inning of Friday night's 4-3 loss to the New York Yankees with tightness in his forearm. An MRI performed after the game revealed the extent of the injury.

"I'm super glad I took myself out, just looking at the MRI and stuff,'' said Glasnow, who said he was relieved to learn he will not need surgery. "Of course I'm not excited to be out four to six weeks, but I'm just happy that it's not 16 months."

The Rays said Saturday the right-hander will be shut down from throwing for seven to 10 days, then be re-evaluated. Once he's cleared to resume throwing, Glasnow, 25, will need to be built back up to start.

"You never really fully know until he gets right back up and gets going, but we're optimistic from the early reports that it's not anything that's going to keep him out for a substantial amount of time,'' manager Kevin Cash said.

Glasnow is 6-1 in eight starts with a league-leading 1.86 ERA.

The Rays announced that catcher Travis d'Arnaud was added to the roster after being obtained from the Los Angeles Dodgers on Friday.

The team optioned catcher Nick Ciuffo to Triple-A Durham and recalled infielder Andrew Velazquez.