STANDARDS ARE HIGH:Murray and Djokovic tough to catch up with says Wawrinka

Stan Wawrinka of Switzerland poses with the championship trophy after defeating Novak Djokovic of Serbia in their 2016 US Open Men's Singles final match at the USTA Billie Jean King National Tennis Center in New York on September 11, 2016. Stan Wawrinka became the oldest US Open men's champion in 46 years when he defeated world number one Novak Djokovic to claim a third Grand Slam title on Sunday. / AFP PHOTO

Stan Wawrinka admits Andy Murray and Novak Djokovic have set such high standards that he doesn’t even think about moving above them in the world rankings.

Murray ended Djokovic’s 122-week reign as world number one last weekend and the Scot is determined to outshine the Serb at the ATP Tour Finals next week to ensure he finishes 2016 in pole position.