The Blue Jays have the best outfield D in baseball so I don't think D behind him has been the issue. Although infield D could be better. He doesn't walk a ton of guys but he gets into a lot of deep counts. He will get ahead 0-2 or 1-2 and then start fiddling around with his secondary pitches and let the hitter back into at bat and see a lot of pitches and when things go sideways for him he tends to give up big innings. When he is on he will be great but if he isn't he will often give up big 4 or 5 run innings. I think that's where playing with a team with a better bullpen will help him. The Jays bullpen has been one of the worst in baseball so there was a lot of pressure to go deep in games and he just isn't that guy. If the Astros say be aggressive, attack the zone and give us 4-5 good innings I think he will thrive.