You mean you saw him pitch in HS? It has to be since he debuted in 2013 and threw all of 25.2 IP. He's still walking batters, but is showing improvement. His K% is terrific of course which tells you the stuff is there.
Long term project, risky project, but as said above, is showing some improvement.
By the way, final line: 5IP, 2H, 1ER, 1BB, 9K.