World number three Jelena Jankovic wishes it to be known that she has not got a sweet spot for British Davis Cup player Jamie Murray - but is not sure whether the feeling is mutual.

Murray, older brother of injured British number one Andy, is teaming up with the Serbian world number three in the mixed doubles at Wimbledon and that, according to Jankovic, has fuelled all sorts of rumours.

"I heard that somebody said that on BBC they heard that I have a sweet spot for Jamie Murray," she said. "Where did they get that from? It was the funniest thing that I've heard lately.

"I don't really know the guy so how can I like him? Just to confirm that, it's not true.

"He asked me to play. Actually his agent said I was first on his list to play, maybe he has a soft... I don't really want to get involved with that.

"All I care is we're playing mixed doubles and that's it, which I don't play so often."

Jankovic, who reached the semi-finals of the French Open, is through to the last 16 of the women's singles here but is warning Murray not to raise his hopes of a prolonged run in the doubles.

"It's not my thing," she confessed. "I'm not a good doubles player. I don't think I'm going to be useful for him. He made a bad choice, I think."

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Murray's main focus is of course the men's doubles with American partner Eric Butorac, and the pair attracted a large crowd to Court 14 for their second-round victory over Israel's Jonathan Erlich and Andy Ram.

So large in fact that Andy Murray was watching from the stairs leading up to the nearby press restaurant, while two enterprising souls stood on top of a green wheelie bin until told to get down by a passing steward.

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A word of warning - don't challenge Andy Roddick to a game of golf if you're after a peaceful afternoon.

Roddick revealed his competitive nature makes him a less-than-ideal companion on the links at times.

"Man, here's the deal with golf," Roddick said. "Every time I play golf, I got to buy a new set of clubs.

"It's not relaxing for me. I go mental. The ball's not even moving and I can't hit it right. I haven't reached the point in my life where I have the patience level it takes to play golf.

"And I don't have the pants!"

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Strangest point of the day occurred in the entertaining clash between Spain's Juan Carlos Ferrero and American James Blake.

A Blake passing shot was going well wide until it hit the wooden net post and dropped into Ferrero's half of the court. The French Open champion was convinced the ball had gone through or under the net, and threw himself to the ground in surprise when the chair umpire awarded Blake the point.

"I thought it was under the net, so maybe was my point," said Ferrero, who had the last laugh with a four-set victory over the ninth seed. "I told the umpire, but he told me that it is impossible to see it.

"Of course, that's the first time it's happened to me, I don't think it happens a lot!"