Rio Mesa High administrators announced that the team will forfeit its Sept. 23 game against Santa Clara for using an ineligible player.
"It's one of those unfortunate oversights that occur once in a great while," said Brian Fitzgerald, athletic director for Rio Mesa.
"The young man in question was not an impact player. In fact he only played in two plays all season."
Rio Mesa's only victory of the season came against Santa Clara, 36-6.
The Spartans drop to 0-7, 0-4 in Channel League play.
The United States Junior National Team Trials continue this weekend in the Field Hockey Sports Center at Moorpark College.
The public is invited to watch the tryouts at Moorpark's artificial turf field, which cost $800,000 and opened last weekend.
Lenny McCauige, Olympic coach for the 1996 men's field hockey team, will be selecting members for the under-18 and under-21 teams.
The Harlem Globetrotters will meet the Washington Generals in a benefit basketball game Sunday at 2 p.m. at Moorpark College.
The Globetrotters are training at Moorpark in preparation for a world tour.
Tickets are $10 and can be purchased at the college's business center, campus center and basketball office.
Proceeds go to the school's athletic program.
Faith Baptist High has an opening available in its 16-team boys' holiday tournament, scheduled Dec. 5-10 in the campus gym.