Defending champ Knowles falls; other results

   Mark Knowles, a longtime Sacramento Capital from the Bahamas, and Xavier Malisse of Belgium lost to Robert Lindstedt of Sweden and Horia Tecau of Romania 6-4, 6-4 Friday in the doubles quarterfinals at the $1,166,400 Legg Mason Tennis Classic in Washington, D.C.
  Knowles, 39, was the defending champion with Mardy Fish. They broke up at the end of last year because Fish wanted to concentrate on singles, Knowles said in March. Lindstedt and Tecau have lost in the past two Wimbledon finals.
   Knowles' teammate on the Capitals, Vania King, fell to 16th-seeded Sara Errani of Italy 6-3, 6-2 in the second round of singles at the $721,000 Mercury Insurance Open in Carlsbad. King, who won the women's doubles title at Wimbledon and the U.S. Open last year (both with Yaroslava Shvedova), did not play doubles in Carlsbad.
   Men's Futures -- Kiryl Harbatsiuk, a former Sacramento State star, lost to Tennys Sandgren of Gallatin, Tenn., 1-6, 6-4, 6-0 in the semifinals of the $10,000 USTA/Ursula Beck Pro Tennis Classic in Decatur, Ill.
   Harbatsiuk equaled his best result since turning pro in June.
   Sandgren, an NCAA singles semifinalist at Stanford in May who will be a junior at Tennessee in the fall, is seeking his second title in two weeks. He will face third-seeded Bassam Beidas, a former Pepperdine All-American from Lebanon, in Sunday's final.
   USTA junior nationals -- Matthew Alves of Gold River defeated Hudson Barnhart of Wenatchee, Wash., 7-6 (6), 6-1 in the second round of the USTA Boys 18 National Championships in Kalamazoo, Mich.
   No. 17 seed Anthony Tsodikov of San Francisco also advanced, but No. 32 Eric Johnson of San Jose fell to Jordan Daigle of Lafayette, La., 6-2, 6-3.
   Kassidy Jump of Granite Bay beat Vivian Cheng of Woodbury, N.Y., 6-3, 6-4 in the first round of the girls 16s in San Diego.