Novak Djokovic helped Serbia complete a clean sweep of Canada to set up an ATP Cup semi-final clash with Russia, before Rafael Nadal battled to help Spain join them in the last four.
Djokovic sealed the deal after labouring to a 4-6 6-1 7-6 (4) win over Denis Shapovalov.
Shapovalov edged ahead in the first set as the world number two double-faulted at deuce at 4-4 and the Canadian took advantage.
But Djokovic came back stronger in the second and blew apart his opponent in the third-set tiebreak as he raced to a 5-0 lead and converted on his fourth match point.
This sealed the unassailable 2-0 lead after Serbia’s number two Dusan Lajovic got his side off to a quick start, seeing off Felix Auger-Aliassime 6-4 6-2 in under two hours.
In the dead-rubber doubles match, Nikola Cacic and Viktor Troicki completed a 6-3 6-2 win over Peter Polansky and Adil Shamasdin in under an hour.
In the other of Friday’s quarter-finals, Spain recovered from a shock Rafael Nadal defeat to David Goffin in the singles to progress.
Typically, Nadal returned to lead Spain to victory in the deciding doubles clash, which was won on a super-tiebreak after Belgium claimed the first set.
Aussie star has no complaints.
Watson favourite for title.
Australian shows her quality.
Nadal wary of Dimitrov threat.
Brit impressing again.
Doubles practice booked in.
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