Andy Murray progressed to the third round of the Ethias Trophy in Belgium with a straight-sets victory over Gregory Carraz.
The British No 3 survived a 45-minute black-out to overcome the Frenchman 7-5, 6-3 in the Challenger Tour event to book a clash with Belgium's Xavier Malisse.
The 18-year-old, who has risen to 72 in the rankings, had his enterprising and versatile game overcoming Carraz who contributed to his own downfall with an increasing number of unforced errors.
The Dunblane teenager was broken in the very first game but hit back immediately to level.
With Carraz employing a serve-volley game, the set went with serve until the lights went out with the score locked at 4-4. A 45-minute break ensued although neither player seemed to be particularly affected upon their return.
But it was Murray who claimed a decisive break after going 6-5 ahead and breaking to take the first set 7-5 in 44 minutes.
The second set featured unforced errors and double faults by both players but it was the Scot who took the upper hand by producing a great variety of shots and a highly-effective serve with a number of aces.
Murray broke to make it 5-3 before seeing the game out.
He will play second seed and home favourite Malisse this evening.
Meanwhile, in Filderstadt, Germany, Kim Clijsters improved her hopes of replacing Maria Sharapova as No 1 women's player when she beat Karolina Sprem, of Croatia, 6-3, 6-2 to reach the last eight of the grand prix tournament.
The Belgian, seeded second, was never threatened by the qualifier yet the contest was closer than the score suggested.
Sprem, who ousted Venus Williams at Wimbledon last year, was consistent with her returns as Clijsters was stretched in some rallies.
The Belgian needed six break points to lead 2-0 but Sprem broke back straightaway. Clijsters required another six break points before breaking again for 4-2.
The pair shared the first two games of the second set, against serve, before Clijsters sped to a 5-1 advantage by winning the next four games. Clijsters then held one match point on Sprem's serve before winning the match by serving out for the set.
The next opponent for Clijsters will be Elena Dementieva, the fifth seed, who beat Nathalie Dechy, of France, 5-7, 6-3, 6-4 after an enthralling tussle.
Amelie Mauresmo and Nadia Petrova entered the quarter-finals after having comfortable wins over fluridden rivals.
Sixth-seeded Petrova, the sixth seed, was a 6-1, 6-1 victor over Russian compatriot Elena Likhovtseva while third-seeded Mauresmo, of France, led Jelena Jankovic, of Serbia, 6-0 before the latter retired after losing the first three points of the second set.
Likhovtseva could have led but failed with two break points at 1-0. Thereafter Petrova was untroubled.
She broke to lead 2-1 when Likhovtseva made a backhand error and after a fine forehand volley gave Petrova a second break for 4-1 Likhovtseva sought the trainer and a doctor. She had her blood pressure checked and left the court for a short period but, upon her return, made little impression. The 55-minute match ended with Petrova serving an ace.
Jankovic, who also required a doctor after losing the first set, found Mauresmo, with her serve-volleying and trademark backhand, to be of a higher class.