Replacing the 34-year-old Bryan twins, who now share third, were Max Mirnyi of Belarus and Daniel Nestor of Canada. At 39 years, eight months, Nestor is the oldest player to be ranked No. 1 in doubles. Mirnyi is 34.
"I was not really aware of the points count this week," Mirnyi told atpworldtour.com, "but I am certainly conscious of our consistency and the good work that we've been able to put in during the last year and a half."
The Bryans, who won the 1998 NCAA doubles title, dropped because of a calendar shift. Their points from winning last year's Mutua Madrid Open fell off the computer one week early. Last December, they broke John McEnroe's record of 270 total weeks at No. 1.
Both Mirnyi, 6-foot-5, and Nestor, 6-foot-3, have Sacramento connections. Mirnyi was tutored by Sacramento State men's coach Slava Konikov, a Belarus native, and Nestor was named the World TeamTennis Male Rookie of the Year in 2003 as a member of the Sacramento Capitals.
Nestor and former partner Nenad Zimonjic were the last players to knock the Bryans from the top, surpassing them in August 2010.
Nestor ranks fifth all-time with 116 weeks at No. 1 in doubles, and Mirnyi is tied for 16th at 40 weeks. Mirnyi was last ranked No. 1 in April 2007.
The pair has won six titles, including the French Open and the ATP World Tour Finals, since joining forces at the beginning of last year.
Men's Challenger in Busan, South Korea -- Taiwan's Jimmy Wang, who trains in the Sacramento suburb of Granite Bay, lost to sixth-seeded Danai Udomchoke of Thailand 6-3, 4-6, 7-6 (6) in the first round of the $75,000 Busan Open.
Pro rankings -- Following are this week's rankings of professional players with Northern California ties (change from last week in parentheses):
Mike Bryan, 1998 NCAA doubles champion from Stanford -- No. 3 in doubles (-2), unranked in singles.
Mardy Fish, Sacramento Capitals (2012) of World TeamTennis -- No. 9 in singles (no change), No. 99 in doubles (+2).
John Paul Fruttero, Cal All-American in 2001 and 2002 -- Career-high No. 83 in doubles (+2), unranked in singles.
Kiryl Harbatsiuk, three-time Big Sky Conference MVP (2009-11) at Sacramento State -- No. 786 in singles (+2), No. 1,258 in doubles (+3).
Mark Knowles, Capitals (2001-07, 2009-12), three-time World TeamTennis Male MVP (2001, 2005 and 2007) -- No. 76 in doubles (-2), unranked in singles.
Scott Lipsky, 2002 NCAA doubles runner-up from Stanford -- No. 41 in doubles (+1), unranked in singles.
David Martin, 2002 NCAA doubles runner-up from Stanford -- No. 178 in doubles (-4), No. 774 in singles (+5).
Conor Niland, 2006 Pacific-10 Conference Player of the Year and two-time All-American at Cal -- No. 343 in singles (+3), unranked in doubles.
Sam Querrey, San Francisco native -- No. 76 in singles (no change), No. 32 in doubles (-8).
Jean-Julien Rojer, Capitals (2012) -- No. 35 in doubles (+3), unranked in singles.
Dmitry Tursunov, Folsom resident -- No. 88 in singles (-2), No. 226 in doubles (-1).
Jimmy Wang, Folsom resident -- No. 192 in singles (no change), No. 389 in doubles (-3).
Pedro Zerbini, Pacific-10 All-Conference first team at Cal (2009-11) -- Career-high No. 773 in singles (+4), No. 1,373 in doubles (-25).
Asia Muhammed, Capitals (2012) -- No. 184 in doubles (-1), No. 416 in singles (-7).
Maria Sanchez, Modesto resident -- Career-high No. 148 in doubles (+7), career-high No. 277 in singles (+64).