Knew this game was over in champ select

in champ select I ask Yasuo if I can mid he then says "no I'm better than you silvers". the game starts Yasuo dies 2 times to zed my duo then says "sigh" in team chat after Yasuo proceeds to say "I'm diams 1" (pretty sure he meant diamond 1) then ran it down mid 8 more times till they ended, 5 or 6 of us reported him. this is the epitome of most of my silver games since just 2 games ago I had a nunu brag about how many times he's inted and afked in the past 2 days and he's still playing.