BA's Helium Watch from last week had this to say.
Helium Watch
Kendall Graveman, rhp, Blue Jays: Just more than a year ago, Graveman was starting the first game of the College World Series finals for Mississippi State, and he was the lone consistent starter the Bulldogs had on their wild ride to Omaha. An eighth-round pick as a senior who signed for just $5,000, Graveman wasn’t on the radar for the Jays entering 2014. He made four starts at low Class A but has joined the Blue Jays’ parade of fast-tracked prospects, making at least one start all the way up to Triple-A Buffalo. The 6-foot-2, 195-pound sinkerballer has added a cutter this year and pounds the zone with 90-92 mph fastballs that work over the bottom of the zone, as he did in this week’s start—seven scoreless innings, no walks, four hits, four strikeouts.
Graveman has allowed more than two earned runs in a start twice all year en route to a 12-6, 1.68 composite line across four levels, with just two home runs allowed (to Adam Brett Walker and Nick Franklin) in 155 innings. His strikeout ratio of 6.2 per nine innings isn’t loud, but his 3.69 SO/BB ratio and 1.00 WHIP serve notice he could contribute in Toronto soon as a back-of-the-rotation option.