Change of Pace

Which pitchers have had the largest difference in average velocity between their fastball and change-up? According to fangraphs:

National League
Travis Wood, Reds 90 - 78 = 12.1
Daniel Hudson, Diamondbacks 94 - 83 = 11.2
Edinson Volquez, Reds 94 - 84 = 10.5
Roy Oswalt, Phillies 93 - 83 = 10.1
Jake Westbrook, Indians 89 - 79 = 10.1

American League
David Price, Rays 95 - 82 = 12.6
Clay Buchholz, Red Sox 93 - 81 = 11.7
Jered Weaver, Angels 90 - 79 = 11.5
Luke Hochevar, Royals 91 - 80 = 11
Phil Coke, Tigers 90 - 79 = 11

There are very interesting names here, and posts like this will be even more useful later in the year, with larger sample sizes.

Have a safe weekend.