Explaining the unexpected

Five numbers that illustrate why the Twins are winning:

.370: Combined batting average with runners in scoring position for Joe Mauer (.413), Trevor Plouffe (.350) and Torii Hunter (.341), with 70 RBI.

3.99: ERA of Twins starting pitchers, the fifth-best in the AL. Twins starters had the AL’s worst ERA in the past three seasons at 5.06, 5.26 and 5.40.

18: Saves in 18 opportunities by closer Glen Perkins; he’s the major league leader in saves.

7-4: Combined record of starters Mike Pelfrey and Trevor May; neither was expected to be in the rotation when spring training ended.

26: Errors, tied for fourth fewest in AL.