Joe Maddon is known for thinking outside the box, but he doesn't believe having a reliever start games is something that will catch on.

The Tampa Bay Rays started reliever Sergio Romo on Saturday and Sunday with decent results.

"That was done out of necessity," Maddon said. "If you don't have enough starters that you like, you may choose to do something on a day, maybe two days. To see that becoming a part of the norm, I doubt it. If you want to do it that way, you would really have to nurture that in the minor leagues for a long time. I think you're going to wear out bullpen dudes if you're going to do something like that."

Romo pitched 1 1/3 innings in his start Sunday and was followed by three relievers, but on Saturday, he was relieved by starter Ryan Yarbrough after pitching a scoreless first inning.

"Because it worked, it becomes attractive," Maddon said. "Had it not worked, it would never have been talked about again. I don't think it's a method that will be utilized often. It can on occasion."