Britain's top two Andy Murray and Tim Henman both wasted great chances to reach the quarter-finals in Madrid last night.

Murray lost 1-6, 7-5, 6-3 to Serbia's Novak Djokovic, while Henman's run was halted by a 6-2, 2-6, 7-5 defeat by David Nalbandian of Argentina.

Murray looked likely to beat his fellow 19-year-old after racing away with the opening set of their third-round match.

But Djokovic recovered well to take the second, and increasingly unhappy Murray went off the boil in the third.

British No 2 Henman led the fourth-seeded Nalbandian 5-3 in the deciding set of his third-round match, but dropped four consecutive games.

The pair exchanged angry words at 5-5 in the decider and Henman claimed later that Nalbandian had questioned his sportsmanship.

"If you're going to go down that road, there's only going to be one winner in that debate," he said.