Pittsburgh's top prospect, right-hander Gerrit Cole, made his professional debut on Friday in Mesa, Arizona. It was Cole's first official start as a professional since Cole was drafted with the first overall pick by the Pirates in June. "Cole hit 100 mph twice in his outing and sat mostly at 95-98, throwing four-seamers but not the two-seamer that he underused in college as well, and showed more life on the four-seamer than I saw in either start from him this spring," writes Keith Law of ESPN.com. "His slider was hard at 89-90 and didn't have consistent tilt, but the changeup at 87-88 was plus, his weapon of choice when ahead of left-handed hitters -- although it should be effective against right-handers as well." "One negative on Cole is that he was cutting himself off slightly, landing just to the third-base side of the mound instead of directly on line towards home plate as he did this spring," Law added. "This makes him throw a little bit across his body, which isn't great for command to the glove side and in some cases can lead to shoulder trouble."