Diego Vacca has seen the top of the mountain — and he’ll hope to use this year’s strong playoff run to fuel his Riverside boys soccer team for its new crop of players. The third-ranked Eagles (14-3) fell 4-0 to a stout Pace Academy team that earned its fourth straight shutout in a comprehensive win in the Class AA quarterfinals Saturday afternoon in Gainesville. Johnny Reece scored in each half, while Avery Herman and Ethan Robinson also picked up goals to lead the fifth-ranked Knights (12-4) to a state semifinal appearance in their first year in Class AA. “It’s always tough,” said Vacca, who consoled a team of dejected Eagles on the sidelines.