"I know [the injury] isn't super serious, and I think normally I probably wouldn't have to go on the DL," said Ryan, who was starting Wednesday in place of fellow injured shortstop Khalil Greene. "But we're short a man, so the way things are, that's how it is."
Ryan had some hamstring history to compare his current strain to, having missed a month in 2005.
"That time, I felt the pop and probably even came back too soon," Ryan said. "That was a lot worse. This isn't too bad."
So for now, Ryan will undergo a course of treatment that includes massage therapy, treadmill time, ice, bed rest and "drinking a whole lot of water."
And he'll be there to provide support to Tyler Greene, as well, since he clearly remembers making his own big league debut in a similar situation in 2007.
"[David] Eckstein and [Scott] Rolen were banged up, and that's how I got my shot," Ryan said. "From my standpoint, you don't want to leave the door cracked, because Wally Pipp is always thrown out there, but we're winning and we need help and [Tyler Greene's] going to do fine."
While Tyler Greene's debut came on a misty night in Washington, Ryan's came before a packed house in Houston.
"It was a tight game and I was scared out of my mind," Ryan quipped. "I remember Lance Berkman coming up with the bases loaded and just praying the ball wasn't hit to me."
Lisa Winston is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.