[smeyers003]

This really looks to me like a flush draw that backed into top pair. If he's a smart player the raise is made thinking he may get you to fold out chop hands and if called at worst he's chopping. If he's a donk he thinks he's raising for value.

Sometimes you may run into 77 here but I think its just as likely he has missed lower diamonds. I call here every time and expect to be chopping 80-90% of the time.