One of the biggest storylines this summer will be whether or not the Colorado Rockies commit themselves to trading Troy Tulowitzki.

"If you're going to move him, now might be the best time to do it," one high-ranking executive with another team said. "He's healthy, you've got contenders that need shortstops, and he's not too old yet."

Tulowitzki, who turns 31 in the fall, is hitting .311 in 52 games and has been a mainstay in trade rumors.