Miami  - With Roger Federer's new baby due over the summer, the Swiss insists that his tennis work ethic won't be compromised - it's just that he and girlfriend Mirka will just go about the tennis business with a baby now a part of the mix.

"I'll still take decisions that are best for my game, you know. I have had a team in the past, there's just an added a member. It's going to be all right," he said after reaching the fourth round of the Miami Masters.

Miami - Andy Murray took a set to get adjusted to the baseline backboard game of Juan Monaco before emerging from his first meeting with the Argentine a 4-6, 6-3, 6-2 winner at the Miami Masters on Saturday.

The fourth seed from Britain, losing finalist last weekend at Indian Wells to Rafael Nadal, had his troubles in the first set as 59th-ranked Monaco got everything back and broke Murray twice in the process.

Miami  - Serena Williams played her first match in nearly a month to reach the third round of the Miami Masters 6-2, 6-3 over fellow-American Alexa Glatch on Saturday.

The world number one was back on court after completing her annual pout by skipping this month's other big event in Indian Wells, where she and her sister Venus claim racial discrimination due to crowd jeers nearly a decade ago.

The 2001 incident still burns brightly for the Williams pair, who have vowed never to return to the California desert despite losing hundreds thousands of dollars in various sanctions from the WTA.

Miami  - Former champions Roger Federer and Novak Djokovic revved up their game with overwhelming opening wins to power into the third round of the Miami Masters on Friday as seeds took centre stage.

Number 2 Federer, who triumphed in 2005-2006 at Crandon Park, found his form in a runaway second set as he defeated American Kevin Kim 6-3, 6-2. Djokovic, who triumphed in 2007, beat Canadian Frank Dancevic 6-3, 6-2.

Miami  - Russia put four women into the third round of the Miami Masters on Friday, with second seed Dinara Safina leading the way past France's Mathilde Johansson 6-1, 6-3.

Safina, who missed a chance to seize the number 1 WTA ranking from Serena Williams last week in Indian Wells when the American did not play, paced fourth-seeded compatriot Elena Dementieva, a winner over Anastasia Pivovarova 6-0, 3-6, 6-3.

Miami - Andy Murray said Thursday that his health and fitness are fast-improving after last month's virus scare as the fourth-seeded Scot prepares for his start at the Miami Masters.

For once, Murray is sleeping in his own bed in the pulsing South Florida metropolis, staying in the flat he bought last year.

"I've spent a lot of time here in the last year and a half or so, obviously training, and taken a couple of holidays here as well," said Murray, who devoted his December to fitness work in the Miami area.