In the longest doubles match of the week, the Australian Open champions marginally edged out German pairing Andreas Mies and Kevin Krawiecz 7-6, 6-7, 10-4.
The win also kept alive the hopes of Salisbury and his American partner ending the year as the doubles world No1 pairing.
It proved a bizarre start to the contest with three breaks of serve in a row early on in the opening set before both pairs settled.
In truth, Mies and Krawiecz looked the marginally stronger duo and had the chance to serve for the set at 5-4 only for their opponents to break back and force the tiebreak, which the Anglo-American pair won courtesy of a Salisbury ace.
Salisbury found himself facing a break point in the opening game of the second set but saved that. From there, neither pair could be separated, the set again going to a tiebreak which the Germans sealed to force a deciding match tiebreak.
In that, Salisbury and Ram raised their standard and proved a class apart to comfortably outclass their opponents.