The baseball team at California Institute of Technology broke a 228-game losing streak Saturday with a 9-7 nonconference victory over Pacifica. The team last won on Feb. 15, 2003.

Caltech, based in Pasadena and playing most of its sports in the N.C.A.A.’s Division III, is no stranger to long losing streaks. Its men’s basketball team ended a 26-year, 310-game conference losing streak in 2011. Its women’s volleyball team ended a 56-match losing streak last fall, but is 0-184 all-time in the Southern California Intercollegiate Athletic Conference.

This season’s baseball team, under the first-year coach Matthew Mark, needed only two games to end the nearly decade-old losing streak. After losing the first game of a season-opening doubleheader on Saturday, 5-0, Caltech beat Pacifica behind a complete game by the freshman pitcher Daniel Chou.

“There was a good sense of composure,” Mark said of the aftermath of the game, played at home before an official attendance of 87. “It was almost as if they had been there before.”

The senior third baseman Mason Freedman had a hit and run batted in, but his role was noteworthy mostly because he was also part of the basketball team two years ago that broke the 310-game conference losing streak.

For the baseball team, a similarly long conference losing streak persists. Caltech has not won a league game since 1988, a losing streak sitting at 463.