Some announcers are good at yelling: Joe Davis is one, and the best is the great Gus Johnson
Some announcers are just HORRID at yelling: Joe Tessitore showed how bad he is at yelling during today's ASU-Texas CFP game. But the worst for quite some time now is ESPN's lead CFB announcer, Chris Fowler. In the last couple of years, especially, his yelling includes lowering his voice, apparently attempting to be gruff and uber-masculine, while yelling. Ugh, it sounds awful IMHO.