Just to set the record straight. McCoy beat Boyer during the year when the teams met (I believe the score was 6-2,7-5). But in the state tourney, Boyer beat McCoy twice. First, in the team competition, where Boyer won in a 3rd set tiebreaker, then in the individual semis, where Boyer won 6-4,6-4.
IMO McCoy is still the stronger player overall (Boyer hadn't ever beaten him previously), but Boyer had a great weekend at the state tourney and now probably has confidence that he can beat him. Remember too that Boyer (a junior) is a year younger than McCoy. The future is bright for him certainly.