Finally a write up on Rowley that's let's us know what his stuff is:
http://www.fangraphs.com/fantasy/the-prospect-stock-watch-senzel-mcmahon-rowley/
"Chris Rowley, RHP, Blue Jays: Rowley — who will start for Toronto on Saturday in his MLB debut — has a fun little background. He was signed as an amateur free agent after graduating West Point to help fill a void on the Jays rookie squads after the 2013 draft. He appeared in nine games with three walks and 39 Ks (with a 1.10 ERA) in 32.2 innings before leaving baseball for two years to complete a commitment to the US military. He was excused from his five-year commitment early — to become an ambassador for the military — and had an unexpectedly-good season when he was pushed to high-A despite two years of rust.
Rowley produced a 3.49 ERA in 31 games (14 starts) and showed the same excellent control that he had in his debut. Moved up to double-A in 2017, the 26-year-old right-hander was at it again early in the year with outstanding numbers in 10 games (six starts). That pushed him to triple-A where he’s produced a 2.82 ERA with 15 walks and 41 Ks in 54.1 innings. All along the way he’s also produced above-average ground-ball rates.
The thing about Rowley, though, is that his stuff is modest. He relies on lots of movement, changing eye levels, excellent control and a ton of moxie. His heater sits in the upper-80s and works in the 87-91 mph range most of the time. He’s made 67 appearances in his pro career with 30 of those coming as a starter suggesting Toronto isn’t sold on him as a starter. The Jays need arms — badly. So Rowley is going to start in the Majors. He has value as a big league arm but it’s likely going to be as a reliever long term. The lack of fear and incredible makeup could help him become the next Luke Gregerson – a soft-tossing right-hander who can nonetheless become a decent high-leverage reliever despite the lack of mid-90s bullets."
Wouldn't it be nice to catch lightning in a bottle with this guy even he maxes out as a 4/5 SP