Former world number one Rafael Nadal says he is expecting an extremely tough match on Thursday night when he faces Frenchman Jo-Wilfried Tsonga as he looks to reach the semi-finals of the ATP World Tour Finals in London.
Both players go into the match knowing that victory for either of them will seal second spot in Group B and a place in the knockout stages at the O2 Arena. Fans of the betting
should remember this.
The Spaniard has won six of the last eight matches...