Something similar happened at my school a few years back. A teacher got sacked from my school for swearing, ranting and yelling at a class of year 6s for not doing well enough on their spelling tests...("ISN'T MY TEACHING GOOD ENOUGH FOR YOU RICH SHITS?!!")
I'd defs contact the prinicipal about this. It's not minor enough to solely notify the head of sport. Teachers are supposed to set examples and take care of their students, not intimidate them.
7-0 is nothing, really 
Haha yeah...
scores of a soccer game from year 7s
wesley: 0 Assumption Grammar or college (whatevs): 19
(The wesley kids were in year 7 and they played them against big scary year 11 assumptions who looked like men.)