Boys tennis — Dawson School at 4A Region 1 (at Colorado Academy), 1 p.m.; Peak to Peak at 4A Region 2 (at Kent Denver & Cherry Hills Country Club), 3 p.m.; Broomfield, Centaurus, Erie, Longmont, Silver Creek, Skyline at 4A Region 5 (at Broomfield Swim and Tennis Club), 8:30 a.m.; Boulder at 5A Region 7 tournament (Colorado Athletic Club-Monaco); Fairview, Legacy at 5A Region 2 tournament (at Fairview), 8 a.m.
Gymnastics —Broomfield at Fort Collins, 6 p.m.
Boys soccer — Frederick at Skyline, 4 p.m.
Softball — Weld Central at Lyons (at Skyline), 4 p.m.; Boulder at Monarch, 4:15 p.m.
Volleyball — Union Colony at Lyons (at Skyline), 5 p.m.