ROHNERT PARK, Calif. - Starter Tim Shibuya struck out nine batters but it was to no avail as the No. 21 UC San Diego baseball team lost, 5-1, in Friday's series opener at No. 16 Sonoma State.

UCSD fell to 21-12 overall and 14-11 in the CCAA. Sonoma State upped its marks to 22-7 and 15-7.

Shibuya was the hard luck loser as he gave up just one earned run over seven complete innings of work. The righty from Wyoming scattered seven hits and walked none, but fell to 6-3 on the season. Shibuya retired the Seawolves in order in the first, third and fifth innings.

Sonoma State scored all it would need in the first inning. Shibuya got the first two batters to ground out and then he struck out first baseman O'Koyea Dickson. However, Dickson reached first as the pitch got past Triton catcher Michael Benton. Shortstop Alex Todd followed with a single through the left side, moving Dickson to second. Center fielder Kyle Jones knocked them both in as he tripled to left-center, giving Sonoma a 2-1 edge, a lead the Seawolves would not relinquish.

The Triton offense totaled six hits but had trouble scoring runs to support Shibuya, stranding eight runners on base in the game. The Seawolves left just one runner on base.

Senior Blake Tagmyer walked twice and had the Tritons' lone RBI with a two-out RBI single that plated right fielder Kyle Saul in the top of the first inning. Tagmyer last played on Mar. 25 as he missed six games due to injury. He kept his hit streak alive and has now hit safely in his last 11 games.

First baseman Evan Kehoe was the lone Triton with multiple hits as he was 2-for-4.

SSU starter Thomas Lee (2-0) also threw a gem, giving up just the one run on five hits over six innings. He struck out eight and walked three. Ian Ocon picked up his third save after pitching three scoreless innings to finish the game.

Three Seawolves had two hits each including DH Kevin Cramer, Jones and third baseman Randy Wells.

Sonoma State tallied single runs in the second, seventh and eighth innings to seal the win.

The two teams meet again Saturday for a doubleheader starting at 11 a.m. at Seawolf Diamond.