Yes they are.
There are some people with very sophisticated mathematical models, fast pictures (some even have people courtside to gain an advantage) and using software to alter their prices after every point, and on occasion even after a first serve has missed. These people, if they know what they are doing, can make literally millions per year. This is one reason for the ridiculous recent increase in the Premium Charge, but that's another story. Obviously it's not quite the same for minor non-televised events, but the prices can be very fluid and sensitive on major televised events. This is good as you can always pretty much back and lay in near 100% markets; excellent if you can identify the value at any given point. I personally couldn't be bothered with the level of concentration required to try to bet point to point, although obviously you can design a model and software to do it for you.
Regarding Cibulkova, she is very erratic. She really goes for it, and if she has a bit of a dip she can lose three or four games in no time. She should never have lost to Falconi, who is a pretty poor player, but she just handed it to her in the third set. You weren't the only one cursing at the end. As I think I might've said across at the gambling forum, the courts (particularly the show courts) are playing slower than usual, so it is easier to break serve than it would be normally, so comebacks are more likely than usual. I have counted five players trading at 1.01 or 1.02 who have been beaten the first two days. Worth bearing in mind, particularly if you're betting in-running. It's always good to have an idea how likely it is people are going to hold serve if you're betting during the match.
McKee, on 01 September 2011 - 02:21, said:
I'm not watching it, but I really hope Roddick loses here. Would be the start of a hilarious wind-down for the luckiest man in tennis.
Didn't think he was ever going to lose against Russell, even when he went a break down at the start of the fourth set. Probably won't get very far in the tournament though, certainly he needs to improve a lot to make the second week. How is he the luckiest man in tennis though? Anyone watching the 2009 Wimbledon final for example might say he was rather unfortunate.