Greg Holland

Colorado Rockies closer Greg Holland works against the Washington Nationals in late April - Photo: Matthew Stockman/Getty Images

The Rockies, Diamondbacks, Yankees, White Sox and Orioles are among the Major League teams that are off to surprisingly good starts.

Jon Heyman of FanRag Sports looks at whether or not each of these clubs have staying power.

CHECK OUT JON'S PIECE FOR FANRAG SPORTS HERE