US Open Diary Day 8

© Getty ImagesTommy Robredo remains alive in singles and doubles.

Double Duty: Spaniard Tommy Robredo remains alive in both the singles and doubles at the US Open. Robredo and countryman Marcel Granollers advanced Monday to the doubles quarter-finals and on Tuesday Robredo will play Mikhail Youzhny for a place in the singles quarter-finals. That all leads to the trivia question: Who was the last player to win the singles and doubles titles at the same Grand Slam event? Yevgeny Kafelnikov, at the 1996 French Open.

Sam Stands Alone: Sam Querrey is sure to get plenty of support from American fans when he takes on Swiss Stanislas Wawrinka in the US Open fourth round Tuesday. But his loyal support group, the Samurai, won't be in the stands. "They've got school and work so it's tough for them to come out here," Querrey said during an interview at the ATP World Tour booth at Flushing Meadows Monday.

Stepping Down: Patrick McEnroe announced Monday at the US Open that he will stand down as United States' Davis Cup captain after the World Group play-off tie against Colombia in Bogota 17-19 September. Now in his 10th year as captain, McEnroe is the longest-tenured captain in U.S. Davis Cup history and led the U.S. to its record 32nd Davis Cup title in 2007, its first title since 1995.

“It is with a heavy heart that I am resigning as Davis Cup captain, but it is a decision I felt was best for the team and myself right now,” McEnroe said.  “Davis Cup is a significant time commitment and this decision will allow me to focus more energy on my family and to the USTA Player Development program”.

The United States will go into the tie without its No. 1 singles player, Andy Roddick, and World No. 1 doubles team Bob Bryan and Mike Bryan. The team to play Colombia comprises Mardy Fish, Sam Querrey, John Isner and Ryan Harrison.

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Quote Of The Day: "I tried to be very tough and very hard with him, showing him that I'm the man and I'm the leader." - Gael Monfils after his straight-sets win over Richard Gasquet.