Last year, Chris Schwinden averaged almost 90 mph with both his four-seam fastball and his sinker in the big leagues last year. Of course, that means there were some 91 mph, and fewer 92 mph fastballs, but an equal number of 89 and 88 heaters.
Gorski was mid-upper 80s a lot in 2010 in Savannah, but I was told he was up to 90ish consistently in 2011 in St. Lucie. Sure, it was one inning in the spring, but 92 is a long way from 86-87. Obviously, more velocity makes him a better prospect.