Ladbrokes now has Anthony as favourite, after cutting his odds to 4/6 from 11/10. Previous favourite Eugene, the geeky virgin ham radio enthusiast, has drifted out to 11/10 from 4/6.
The bookmaker has also switched its odds on the 11th eviction making Kinga, who became notorious for her drunken sexual antics with a wine bottle last week, favourite to go on odds of 8/11. Previously crimper Craig was favourite for the chop.
Ladbrokes spokesman Warren Lush said: "The fight for the £100,000 is a two-horse race and the Geordie dancer has hotfooted back into pole position at the expense of nerdy Eugene.
"Come Friday it looks like it will be too close to call between these two. Money suggests Kinga will go first and not Craig. She hit the house like a tornado and showed a lot of bottle."
Meanwhile, official Big Brother bookmaker PaddyPower has Eugene at evens to win, with Anthony ahead on odds of 8/13. It already had Kinga as favourite for the 11th eviction.
Makosi, shown last night telling 'Big Brother' that she believed she would be the last one out of the house, languishes at 20/1. She was a long-time favourite to win, until she began telling housemates that she feared she was pregnant after her swimming pool romp with Anthony.
Other bets being offered by PaddyPower include 100/1 for Anthony to take out a restraining order against Craig in 2005, or odds of 8/1 that Anthony and Craig will launch their own brand of hair gel this year.
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