GB hopeful, Dustin Brown, next up for Andy Murray

Dustin Brown, who has a British grandmother, will face Andy Murray in the US Open today Picture: AFP/Getty

Murray will take on Dustin Brown at Flushing Meadows after beating Slovakia's Lukas Lacko in hos opening match, the world No 4 needing just one hour and 51 minutes to complete a 6-3, 6-2, 6-2 victory on Arthur Ashe Stadium.

The 23-year-old Scot can claim the biggest payout in tennis history by winning his first Grand Slam title in New York, adding a $1million dollar bonus to the winner's cheque of $1.7million thanks to his victory in the US Open series leading up to the championships.

In stark contrast, Brown cannot afford a coach and used to travel Europe in a camper van to play in low-key tournaments, such a lack of financial support being one of the reasons he has already expressed an interest in switching allegiance to Britain.

The 25-year-old world No 123 said: "If the possibility is to stay playing for Jamaica, I definitely would love to do that. But if I realise that nothing is going to change over the years I have to look at my career. If things work out with Britain or with Germany, either way, it's a mutual thing.

"The federation is not doing it because I'm Dustin Brown and I'm a nice guy. They are going to do it because I'm going to help them in some sort of way, and vice versa.

"In the last week or two I've been hearing from friends and family in Jamaica that they have elected a new president and that changes have been made in the (tennis) federation. So I'm waiting to hear from them."

Asked what kind of match he could expect against Murray, Brown joked: "A tough one probably. I'm gonna definitely play my type of tennis, play aggressive, try to keep the points short. I've seen that he's a very good returner, so I'll have to see how it works out, how I'm serving, if it's possible to play serve and volley or have to play from the baseline."

Murray overcame what he described as "brutal conditions" against world No 71 Lacko, but will also have to overcome the quirky scheduling at the US Open.

Murray had to wait until day three to play his first-round match, meaning it will take seven wins in 12 days to lift the title, and he said: "It is different to the other slams. I guess it's always been that way. I don't really know whether I like it or not.

"It's a lot easier to play seven matches in 14 days than 12, anyone would tell you that. It's just different here with the semi-final on Saturday and final on Sunday, it is always tricky for all of the players.But it's always been that way, so it's not a problem."

Meanwhile, former US Open champion Andy Roddick stumbled to a bad-tempered early exit from his home grand slam, the American losing 3-6, 7-5, 6-3, 7-6 to unseeded Serb Janko Tipsarevic.

The 44th-ranked Tipsarevic served magnificently and peppered all areas of the court with winners, and clinched the fourth-set tiebreaker 7-4 with a reflex volley at the net to eliminate the ninth seed. The Serbian sent down 16 aces, winning more than 80 per cent of the points when he landed his first serve, and hammered home 66 winners in one of his best ever performances.

Roddick, who went on a petulant rant in the third set when unsatisfied with a lineswoman's explanation of a foot fault called against him, had calmed down enough after the contest to offer praise to his opponent, who also beat him with a fourth-set tiebreaker in the second round at Wimbledon in 2008.

"He played great tonight. He played very high-risk and executed for four sets. I kept telling myself this has to have an expiration date on it," said Roddick.