Ah I stand corrected. Cubs made him play LF more in low A. I just remembered seeing him play 4-5 times (including the futures game) and he's always been in RF.
He played RF most of his life until the Sox decided to switch him to LF half way through AA (all full time in AAA). They should've immediately had him in LF after they acquired him and working on his angles and such in A+ ball. Again speaks to the development system there.
Trout was looking for something offspeed that entire sequence. Giolito could've threw a fastball down the middle to strike him out.
Trout just proved he is a smarter than McCann there.