The Japan Society will hold its 24th annual US-Japan Friendship Cup Tennis Tournament at Mills High School, 400 Murchison Dr., Millbrae, Calif. beginning at 9 a.m. This year, 100 percent of the net proceeds from the tournament will be donated to the JSNC Japan Earthquake & Tsunami Relief Fund. Participants should plan to play for the entire event. The $40 fee includes registration and a bento. Info: jsnc@usajapan.org.