Coach tells Matt "That's my daughter" after his line about respecting women. Then in the very next scene Buddy is yelling almost the exact same line at Tim when Tim steps between Buddy and Lyla after Lyla storms back into Tim's house. Buddy's begging Tim to let him in and says to Tim "that's my daughter over there." What a contrast, Coach's "that's my daughter" line makes clear that Coach will end Matt if Matt treat's Julie badly but ultimately Coach is trusting Matt will not hurt Julie, meanwhile Buddy's parental claim "that's my daughter" has no power and Tim refuses to budge from his doorway. As Tim was standing at the door all between Lyla and Buddy, I was recalling that Buddy is the same man that earlier in the season crushed Tim's confidence and had him eating raw squab.

To me Buddy and Tim's conflict is all the more pointed because they have to much in common. They are both fun and funny, prone to excess and poor judgment, charismatic but flawed. At this point their main difference is that Tim is faithful to Lyla, but can he stay that way?

And now that I think about it, why does Coach trust Matt with his daughter? Because Coach and Matt are both the "good guy" types. I'm not saying Coach and Matt are as much alike as Buddy and Tim, just that they have this one crucial thing in common so Coach can (very reluctantly) trust Matt.

Now that I think about it although "that's my daughter" is a claim of protection and parental rights, Coach's "that's my daughter" is said in the course of very reluctantly but gracefully letting Julie grow up, while Buddy's "that's my daughter" is said in the course of having made his daughter grow up too fast.