Countif formula help

I have a spreadsheet designed for softball schedule for an entire league and am trying to come up with a way to count certain information so that I can figure out if the schedule is balanced.

I have attached this sheet for anyone wishing to help.

What I'd like is for a way to sum the number of games each team plays on diamond 3 or 4 and to sum number of games at 6:30/7:30/8:30

THANK YOU