British number one Kyle Edmund has reached a career-high 14th in the ATP world rankings following his run into the semi-finals at Beijing last week.
His rise up the rankings this year has been steady having started the year at 50.
On this occasion he has moved up two spots having now hopefully fully recovered from an illness which has blemished recent results prior to Beijing where he lost to the eventual champion Nikolaz Basilashvili.
The 23 year-old arrived in Shanghai for the penultimate Master Series event of the year, and, seeded 11, came through a tough opener against Filip Krajinovic 7-5 6-3.
Edmund was 4-2 and break point down in the first set when the umpire accepted a late challenge to a line call in his favour.
He took the game before leveling at 4-4 and went on to take the opening set.
Edmund eventually beat the world number 35 after 91-minutes and will play Italian Andres Seppi in the next round.
Elsewhere, Wimbledon and US Open champion Novak Djokovic, who was given a bye into the second round, beat Frenchman Jeremy Chardy 6-3 7-5.
World number three Djokovic had not lost to 41st-ranked Chardy in their previous 11 meetings and rarely looked like suffering his first defeat against him.