By Daniel Chavkin The Tigers head coach addressed what went wrong on Saturday night in South Bend. The biggest upset in college football this weekend occurred in South Bend, Ind., as unranked Notre Dame dominated No. 4 Clemson in a 35-14 blowout. It was the best win of the season for the Fighting Irish (6-3) under first-year coach Marcus Freeman, while the Tigers (8-1) suffered their first loss of the season. After the game, Clemson head coach Dabo Swinney blamed himself for the Tigers’ poor performance. “I don’t want to overstate it, but this is a very disappointing day and it’s my responsibi…