Portugal Colonial - Auger-Aliassime beats Shelton to get off mark at ATP Finals

Canada's Auger-Aliassime won just his second ever match at the season-ending tournament with a battling display in Turin, coming back from a poor start to boost his hopes of reaching the semi-finals.

His win means that current world number one Sinner will qualify from the Bjorn Borg Group if he beats Zverev later in front of a partisan home crowd.

Auger-Aliassime's imposing service game, which included nine aces, eventually broke down Shelton whose erratic play cost him a debut win at the Finals.

The 25-year-old showed no signs of having the calf problem which affected his opening loss to Sinner, and he will face Zverev on Friday with a chance of making the knockout stage.

Shelton looked to be in control when he won the first set at the first opportunity, breaking Auger-Aliassime's serve for the second time just after having his initial break cancelled out.

Auger-Aliassime won a tight second set which went with serve until the tie-break, when Shelton had to save three sets points before eventually conceding the match lead with a double-fault.

And he won the match at the third time of asking at the end of another bruising set, breaking Shelton and getting a win on the board.

P.Serra--PC