ST PATRICK'S College has all but sealed a semi-final berth in the Herald Sun Shield school football competition, thrashing Marcellin College by 107 points at St Patrick's yesterday.The Ballarat school piled on 16.28 (124) to 2.5 (17), racking up 44 shots on goal despite constant rain throughout the match at St Patrick's yesterday.St Patrick's has one pool match remaining, against Box Hill Senior Secondary College at Box Hill next Wednesday. Box Hill SSC was beaten by Marcellin College by 34 points one week ago."As it stands Box Hill would need to beat us quite convincingly for us not to shore up a semi-final position,'' St Patrick's coach Howard Clark said."Having said that, we need to go into the semi-final game having had a win against Box Hill. If we play the way we played to today, I think we would go a long way towards doing that."As it stands we are the only team in our pool that has won both games and our percentage is pretty good too (766).''St Patrick's opened the match with a 4.6 to 1.1 first term but it was the third term, when the home team scored 5.11 to 0.1, that illustrated the Ballarat school's dominance.Clark said the high ratio of behinds to goals was a result of the conditions."It rained all day. That affected accuracy and there were a lot of rushed behinds as well. On a dry day I'd be hopeful that 16.28 might be a 28.16 result,'' Clark said."We controlled possession really well. Perhaps we tried to play dry-weather football earlier, but once we addressed that it certainly reflected on the scoreboard."The squad is a lot deeper, in terms of player depth, compared with previous years. Tom McDonald, Jake Ward, Nathan Kelly and Jake Mead have come into the side, as have local players Brad Crouch and Scott Spriggs, who didn't play last year. The addition of those guys and the natural improvement of 12 players from last year, it becomes a very formidable squad."There's still four guys who could come into the team who are very good players. That's the beauty of this team."