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College Park J.R. Santiago (16) prepares to throw out Clayton Valley Charter's Ryan Milligan (2) at second base in the second inning of their game in Pleasant Hill, Calif., on Thursday, May 8, 2014. The win gave College Park the Diablo Valley League regular season title. College Park defeated Clayton Valley Charter 4-3. (Jose Carlos Fajardo/Bay Area News Group)

PLEASANT HILL -- Nick Oar blasted a three-run home run and pitcher Joe DeMers scattered five hits to carry the No. 2 seed College Park High baseball team to the NCS Division II championship with a 7-2 win over Marin Catholic-Kentfield on Saturday at Diablo Valley College.

Oar's homer was the crushing blow in a five-run first inning, which was ample support for DeMers, who struck out eight.

A strikeout-throw out double play ended the top of the first inning and seemed to give the Falcons (27-3) a boost in their first at-bat. Scotty Hroza drew a leadoff walk and scored one out later on DeMers' single. One more run scored on a passed ball with the bases loaded while Oar was at bat, but that was not the end of the damage.

With a 2-2 count, Oar fouled balls off the fence near the left and right field foul poles. But Marin Catholic pitcher Bryan Jakiemiec hung a curve ball on the next pitch, and Oar hit it out for a 5-0 lead.

"I just try to treat every at-bat like it's the middle of the season," Oar said. "I don't remember how many pitches I fouled off. But I'm going to remember that one -- I hit a home run in the NCS championship game."

DeMers -- who also hit a two-run homer in the fifth inning -- then went to work against the fifth-seeded Wildcats (22-7).

He gave up a run in the third when Paul Kunst doubled and scored on Andrew Celis' single, the first run allowed by College Park since the fourth inning of a first-round win over Cardinal Newman -- a 20-inning stretch.

DeMers quickly settled down and retired the next nine batters before giving up a run in seventh.

"This team was hungry the whole season, and to get that last out was unbelievable," DeMers said. "We set a goal at the beginning of the season, and we fulfilled it today."