|Mackenzie McDonald, shown during the recent Tiburon|
Challenger, soared 202 places to No. 339 in doubles.
Photo by Paul Bauman
But the 21-year-old native of Piedmont in the San Francisco Bay Area turned pro only four months ago, and he was No. 541 last week.
McDonald zoomed 202 places to a career high by winning the $100,000 Fairfield (Calif.) Challenger with 31-year-old Brian Baker of Nashville, Tenn., last Saturday.
It was the 5-foot-10 (1.78-meter), 145-pound (66-kilogram) McDonald's first Challenger title in singles or doubles. In Futures tournaments, he has won one singles championship and four doubles crowns.
Fairfield is only 37.5 miles (60.4 kilometers) from Piedmont.
McDonald turned pro in June, forgoing his senior year at UCLA, after becoming the first man in 15 years to sweep the NCAA singles and doubles titles. Matias Boeker of Georgia accomplished the feat in 2001. The last woman to sweep the crowns was Nicole Gibbs of Stanford in 2012. She is now ranked No. 72 in singles.
Players with Northern California ties ranked in the top 1,000 in the world (change from last week in parentheses):
Bob Bryan, 38-year-old former NCAA singles and doubles champion from Stanford -- No. 5 in doubles (+1), unranked in singles.