Great Britain have moved to the brink of a Davis Cup victory over Canada after Jamie Murray and Dom Inglot won a tense doubles rubber in Ottawa.

The pair defeated Daniel Nestor and Vasek Pospisil 7-6 (7-1) 6-7 (3-7) 7-6 (7-3) 6-3 to put the visitors 2-1 up ahead of Sunday’s (Monday AEDT) reverse singles.

The round-one tie was delicately poised after the first day following victories for Dan Evans and Pospisil, making what is so often a decisive match arguably even more important.

It was a very even battle on paper, too, with all four experienced doubles players.

Victory for Evans against Pospisil in the first match on Sunday would clinch the tie for Britain, while a win for the Canadian would set up a decisive fifth rubber between Kyle Edmund and 17-year-old Denis Shapovalov.