In the merry-go-round world of men’s doubles, a partnership that lasts for more than two years is a rarity, but Jamie Murray and John Peers are proving that sticking together can have its rewards. The Scot and the Australian, who first joined forces early in 2013, will play in their second successive Grand Slam final when they take on the Frenchmen Nicolas Mahut and Pierre-Hugues Herbert here at the US Open.