No. 3 Penfield 25-25-17-25, No. 2 Fairport 19-19-25-22
Sam Bittker finished with 13 kills and five digs and John Sprague dished out 38 assists to lead Penfield (18-2).
Jon Roat added 11 kills in the win.
The Patriots, who will play McQuaid for the sectional title for the sixth time in the last nine years, had been swept in the previous two matchups with Fairport (17-3).