This is going to pain Troy Tulowitzki more than a trip to the disabled list, but the best shortstop in the game needs to consider a new job.

Tulowitzki is a third baseman waiting to happen. Not this season. But soon. Sooner than he or the Rockies dare think.

Alex Rodriguez, one of the top five home-run hitters in major-league baseball history, switched from shortstop to third base at age 28. Tulowitzki will celebrate his 28th birthday in October.