Comment: Because

(See in situ)

In reply to comment: so why not in this case? (see in situ)

Because

after his sprint he could have been home, and in fact based on Racheal Jenteal testimonmy he was indeed by his
Father's house when he seen Zimmerman walking(60 yards away) and returned to see whats up with that creepy ass cracker, and thus the encounter/sucker punch began.