Mei wanted to get Sunohara back on the Soccer team. They didn't want to, so after days of Mei coming by and begging to them, they decide to allow him back on the team should she help them with practice.
This involves them kicking soccer balls and Mei, along with Tomoya helping, to fetch them. They end up being assholes and also hit them with said balls. When they are done they refuse to let Sunohara on and insult Mei until she cries.
Enter Sunohara in which he and Tomoya fight the club, only to get beaten up and lose while Mei continues crying in the background. Tomoya is pissed off at Sunohara for ignoring Mei and her efforts to get him back on the team, but Sunohara believed that as long Tomoya was with Mei, everything would be fine.
They get pissed at each other and begin to beat the shit out of what's left of each other. Next day Mei leaves and the two realize how deep their friendship is.
Homo sex is believed to occur shortly after this.