Stanford men win opener; Mayo reaches quarters

   The Stanford men defeated visiting Pacific 6-1 today to open the college spring season.
   The Tigers' point came at No. 1 singles as No. 105 Sem Verbeek topped John Morrissey 6-4, 4-6, 6-2.
   The Cardinal is coming off a season in which it lost in the first round of the NCAA Tournament for the first time in 35 appearances.
   The Stanford men have won 15 NCAA team titles in tennis, almost double any other school's total. USC is next with eight, including four in a row from 2009 through 2012.   But Stanford's last NCAA team crown came in 2000, when the Cardinal won its fifth championship in six years.
   Juniors -- Unseeded Keenan Mayo of Roseville in the Sacramento area beat seventh-seeded Daniel Michalski of Poland 6-3, 6-3 to reach the quarterfinals of the Nike Junior International Teen Tennis boys 14s in Bolton, England.
   Mayo, one of two unseeded players and four Americans in the quarterfinals, will face fourth-seeded Felix Auger Aliassime of Canada. Auger Aliassime dispatched Zhao Lingxi of China 6-3, 6-3.
   Mayo also advanced to the doubles semifinals with Roscoe Bellamy of Pacific Palisades in the Los Angeles area. Seeded fourth, they edged seventh-seeded Lingxi and Tomas Soares of Portugal 6-4, 2-6 [10-5].
   Bellamy and Mayo will meet second-seeded Auger Aliassime and Nicaise Muamba of Canada. Auger Aliassime and Muamba dismissed eighth-seeded Tomasz Dudek of Poland and Michalski 6-1, 6-3.
   Mayo won the boys 12 singles title in the 2012 USTA National Winter Championships in Tucson, Ariz., and ended the year ranked No. 1 nationally in the division.