Jamie Murray and Bruno Soares are into the doubles semi-finals of the ATP World Tour Finals and on course to end 2016 as the world number one pairing.
Briton Murray and Brazil's Soares beat Croatia's Ivan Dodig and Marcelo Melo of Brazil 6-3 3-6 10-6 to top the Edberg/Jarryd Group.
The win takes Murray and Soares above Pierre-Hugues Herbert and Nicolas Mahut in the rankings.
The French pair could regain top spot by winning their final group match.
However, Friday's match is Herbert and Mahut's last chance to accrue another 200 points because they lost their opening two games and cannot qualify for the semi-finals.