Three head Davis Cup betting
Sky Bet can't split Argentina, Serbia and beaten 2012 finalists Spain at the head of their 2013 Davis Cup market.
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Argentina have drawn Germany in the first round of matches, scheduled for the beginning of February, and are 7/2 to win for the first time having been beaten finalists on four occasions.
Serbia return to the competition after a year-long hiatus and are also 7/2 chances having won the title in 2010, while Spain are the same price to win for the sixth time this century.
"It looks a very competitive event in 2013 with several leading nations having chances," said Sky Bet's Chris Kennedy.
"Novak Djokovic has already stated that he will return to play in the Davis Cup next year, after taking a year out of the competition and Serbia must be considered live contenders again.
"Argentina look to have a very handy draw with plenty of potential home ties and will surely go close if Juan Martin Del Potro can remain injury free, whilst Roger Federer is running out of time to capture the Davis Cup for Switzerland and he might well target this event as a main goal for the season ahead."
The Swiss are fifth in the betting at 13/2, just behind 11/2 chances France, while the Czech Republic are 8/1 to defend their title.
That 3-2 success over Spain represented a fine result for Bettingzone's tennis expert Andy Schooler, who advised an each-way bet on the Czechs at 25/1 prior to the start of the 2012 competition.