No. 6 qualifying seed John Lamble of Saratoga in the San Francisco Bay Area routed No. 1 Tucker Vorster of South Africa 6-2, 6-0 Sunday to reach the main draw of the $100,000 Nordic Naturals Challenger at the Seascape Sports Club in Aptos, Calif.
Saratoga is a 40-minute drive north of Aptos, which is situated on the coast of the Pacific Ocean.
Lamble, a 24-year-old ex-Santa Clara University star, will play wild card Clay Thompson, a 6-foot-6 (1.98-meter) former UCLA All-American, in the first round on Tuesday.
Also advancing to the main draw were No. 2 qualifying seed Cameron Norrie of Great Britain, and No. 3 Eric Quigley and No. 4 Raymond Sarmiento of the United States.
Main-draw matches begin today at 11 a.m. In the featured match at 6 p.m., top-seeded Daniel Evans of Great Britain will face 6-foot-5 (1.96-meter) wild card Tom Fawcett, who will be a junior at Stanford in the fall.
The Aptos tournament, in its 29th year, is the longest-running Challenger in the United States.
Here are the singles, doubles and qualifying draws and today's schedule.