The Toronto Blue Jays turned to 23 year old lefty Sean Nolin to make a spot start for the big league team earlier in the week. A 6th round pick in 2010 out of college, Nolin was ranked as the Jays 19th best prospect by Baseball America to start the year, and 9th in the system by FanGraphs' Marc Hulet. His big league debut didn't go well, to say the least, as he recorded just 4 outs, striking out none, and gave up 6 runs.
Nolin is a large pitcher, listed at 6-5, 235. Here is his release point, along with all the locations of his pitches:
Obviously he was hit around in his start, so let's look at his locations on pitches that were hit for hits or run scoring plays (technically the in play, no outs designation and the in play, runs designation):
isn't especially good at hitting balls low, but is good at hitting breaking balls low, at least much better than league average. You can see the homer here, it was on an 0-2 count and the pitch was nearly in the dirt, and Hardy somehow manages to pull it for a homer. At 74 MPH (most likely about 72 MPH in Toronto), it isn't especially slow, but maybe slow enough to adjust to.
Mechanically, Nolin uses a pretty high leg kick to try to hide the ball, doesn't have great posture at time of delivery, not really twisting his back, but appearing to be very low and not upright. His arm angle comes up above his body, like this:
The first conclusion is pretty obvious, Nolin wasn't ready for the big leagues and probably shouldn't have started that game. If we adjust for Toronto's apparent velocity friendly radar gun, his fastball seems to be a little below average, with some kind of cutter/slider, a change, and a curve that apparently isn't very effective. It can be tricky to make pronouncements on a player's future based on the data of one bad game, but the stuff looks pretty vanilla overall. Perhaps Nolin can be a back end starter in the somewhat near future, but he doesn't look like a real impact starting pitcher.