Aug. 28 (Bloomberg) -- Andy Roddick cruised into the second round of the U.S. Open, the scene of his only Grand Slam title, with a new coach, while Lindsay Davenport advanced to the third round in the season's last major tournament.

Watching from the stands was U.S. Davis Cup captain Patrick McEnroe, who will be working temporarily with former world No. 1 Roddick after he and his elder brother John decided to go their separate ways.

``John's been feeling the effects of the road for a little while,'' the 25-year-old Roddick told reporters after he beat Fabrice Santoro of France 6-2, 6-2, 6-2 at Arthur Ashe Stadium yesterday in New York. ``He was spent, I was struggling so it was a very easy conversation.''

It's five years since Roddick, the No. 8 seed, won the tournament. In the past two U.S. Opens he's lost to four-time champion Roger Federer. The 12-time major winner from Switzerland defeated him in the 2006 final and again in last year's quarterfinals.

French Open finalist Dinara Safina of Russia will take on Roberta Vinci of Italy in the first match on day 4 at Arthur Ashe Stadium. Wimbledon champion Venus Williams faces Rossana De Los Rios of Paraguay before James Blake takes on Steve Darcis of Belgium. Top seed Ana Ivanovic plays Julie Coin of France at Louis Armstrong Stadium.

Two-time champion Serena Williams starts the night session against Elena Vesnina of Russia before top-ranked Rafael Nadal of Spain continues his quest for a first U.S. Open title against Ryler De Heart of the U.S.

Davenport Wins

Former U.S. Open champion Davenport beat Alisa Kleybanova of Russia on Day 3. Davenport, 32, is playing in her first U.S. Open since becoming a mother last year. Her son Jagger watched from a courtside suite in the arms of his nanny.

Roddick's brother has traveled with him on tour for 2 1/2 years and had been his coach since Jimmy Connors left in March. Roddick won't decide on permanent replacement until the end of the tournament.

``He was just like, `I'm kind of tapped,' and it's pretty intense day to day,'' Roddick said. ``It wasn't a long, drawn out, dramatic conversation. It was something he got to before I did.''

While their professional relationship is over, John's ``been here the whole time, and we've been hanging out,'' Roddick said. ``It's not too big of a deal and we'll always be brothers.''

Lacking Confidence

Roddick, who lost in the second round of Wimbledon and had to pull out of the French Open in May with a shoulder injury, ``comes in here with as little confidence as he's ever had,'' John McEnroe, Patrick's brother and four-time Open winner, said while commentating on USA television.

This month, Roddick lost to world No. 17 Juan Martin Del Potro of Argentina in the final of the Los Angeles tournament and was beaten in the quarterfinals at the Legg Mason Classic by 71st-ranked Viktor Troicki of Serbia.

Roddick opted to play those events instead of the Olympic Games because he didn't want to jeopardize his preparation for the final Grand Slam of the year.

The highest-ranked American ``needs to make sure his serve and forehand are really cooking'' to beat the top players, John McEnroe said. He plays Latvian teenager Ernests Gulbis, a French Open quarterfinalist, in the next round.

Davenport told reporters after her match she hadn't made a decision about her career once the Open is over.

``We're a little scared to talk about what happens after here,'' she said. ``It's kind of like an unspoken thing hanging behind my husband and I.''

In other results yesterday, No. 3 seed Novak Djokovic of Serbia, Russians Nikolay Davydenko and Svetlana Kuznetsova, and second seed Jelena Jankovic of Serbia all advanced.

To contact the reporter on this story: Danielle Rossingh at the U.S. Open through the London newsroom at drossingh@bloomberg.net

Last Updated: August 28, 2008 01:59 EDT