Alex de Minaur has charged into the fourth round of the Madrid Open with a powerful performance as electricity returned to Spain.
The Australian No.1 took less than 90 minutes to defuse big-serving Canadian Denis Shapovalov with a 6-3 7-6 (7-3) win on Court Arantxa Sanchez Vicario.
Sixth-seed de Minaur and Shapovalov had been due to play late on Monday night but were one of the 22 matches postponed after the Iberian peninsula was hit by a blackout.
The pair returned to the same arena to open Tuesday's play and de Minaur was soon flowing. He broke in the fifth game of the first set after Shapovalov double-faulted on break point, and again in the ninth, closing out the set with a love game.
The second set went to a tiebreak, but de Minaur took that easily to draw level with Carlos Alcaraz with a tour-leading 24th win of the season.
"He's got tremendous firepower from every part of the court, and I had to do my best to neutralise it, and not let him dictate as much as he could," said de Minaur, who has won all five matches with Shapovalov.
De Minaur is now into his fifth consecutive Masters 1000 last-16 and will next face 10th seed Lorenzo Musetti, who defeated Stefanos Tsitsipas 7-5 7-6 (7-3).
World No.21 Francisco Cerundolo downed top seed and two-time Madrid winner Alexander Zverev 7-5 6-3.
But it was perhaps not such a shock as the Argentine has now won all three of their meetings.
"He played better than me today," the German world No.2 said.
"He definitely played better than me last year when we played here. In Argentina it was a little bit of funny match. But to be honest, I didn't play terrible, he just played better than me."
Grigor Dimitrov earlier advanced with a 6-4 7-6 (7-3) victory over Briton Jacob Fearnley.
Americans Tommy Paul and Frances Tiafoe also won on a morning when there were a few teething problems following the power outage, as did teenager Jakub Mensic, lucky loser Gabriel Diallo and Jack Draper.
Daniil Medvedev went through after downing Brandon Nakashima in three and has set up a quarter-final date with Casper Ruud, who swept Taylor Fritz aside 7-5 6-4.
The blackout brought much of Spain and Portugal to a standstill, knocking out subway networks, phone lines, traffic lights and ATMs.
Madrid Open players had to eat by candlelight and Brazilian doubles player Fernando Romboli, who was partnering Australia's John-Patrick Smith, had to be rescued after getting stuck in a lift.
It was not ideal preparation as the duo lost 6-0 6-3 to Argentine pair Maximo Gonzalez and Andres Molteni.
Elsewhere, Novak Djokovic has pulled out of next month's Italian Open. The current world No.5 has lost his last three matches.
The news emerged in a social media post from the event.
