Jonny Marray and Freddie Nielsen defeated in final group match

By Piers NewberyBBC Sport at the O2 Arena
Jonny Marray and Freddie Nielsen

Jonny Marray and Freddie Nielsen failed to maintain their 100% record at the ATP World Tour Finals but still made the semi-finals.

The Wimbledon doubles champions lost 6-3 7-5 to Sweden's Robert Lindstedt and Horia Tecau of Romania.

However, the British-Danish pairing had already qualified after winning their opening two matches.

They will learn their semi-final opponents when Group A is completed on Saturday.

India's Rohan Bopanna and Mahesh Bhupathi earlier took the second qualifying place in Group B with a 7-6 (7-5) 6-7 (5-7) 10-5 win over defending champions Max Mirnyi and Daniel Nestor.

Lindstedt and Tecau had already seen their semi-final hopes disappear with two defeats ahead of Friday's final group match, but they were looking for revenge after defeat in the Wimbledon final.

A flashing backhand return winner from Lindstedt earned them a second break and with it the first set after half an hour.

Marray and Nielsen edged ahead early in the second but could not hold on, and a match tie-break looked on the cards until Lindstedt came up with another piece of magic.

Serving at 6-5, Marray was pegged back to deuce and with it a deciding point, which saw Lindstedt crack a forehand return down the line to take the win.