World number two Daniil Medvedev battled past seventh-ranked Matteo Berrettini then returned for a crunch doubles rubber to help keep defending champions Russia on track for another ATP Cup title Thursday.
The win set them up with a last four clash against Canada after Felix Auger-Aliassime stunned German world number three Alexander Zverev 6-4, 4-6, 6-3.
Medvedev, who is set to be the top seed at this month’s Australian Open with Novak Djokovic facing deportation over a visa issue, was dominant in the first set against Berrettini.
But the gritty big-serving Italian battled back to win a second set tie-break before the Russian got a crucial break in game three of the third set to carve out a 6-2, 6-7 (5-7), 6-4 win.