Andy Murray moved into the quarter-finals of the Valencia Open with a convincing 6-2 6-4 win over Italy's Fabio Fognini.
The win is a boost to Briton Murray's bid to qualify for the season-ending World Tour Finals in London.
Murray dispatched Fognini in 72 minutes, exacting revenge for a crucial defeat by the world number 19 in this year's Davis Cup quarter-final.
The Scot will next face South Africa's Kevin Anderson for a semi-final place.
|The six players chasing three places at the World Tour Finals|
|Race to London position||Player||Nationality|
|Number 6 Marin Cilic has already qualified by winning the US Open|
Murray was in control from the start against Fognini, breaking the Italian twice in the early exchanges to race into a 4-0 lead.
He closed out the first set comfortably, and though the second was more even, a break in the fifth game proved decisive, with Fognini unable to make any impression on the Murray serve.
World number 10 Murray could meet Spain's David Ferrer - one of his main rivals in the Race to London - in the semi-finals, in what could be a crucial match for both men's prospects of reaching the World Tour Finals.
Top seed Ferrer, who has won in Valencia on three occasions, booked his place in the last eight with a comfortable 6-3 6-2 win over compatriot Fernando Verdasco, and will next face Brazil's Thomaz Bellucci.
Meanwhile, Switzerland's Roger Federer fought back from a set down to beat Uzbekistan's Denis Istomin 3-6 6-3 6-4 and move into the quarter-finals of the Swiss Indoors in Basel.
The top seed struggled in the opening set, and even walked toward his chair early in the first game before realising there was still a point to play.
Federer upped his game in the second set and went on to win the match with a love service game.
Croatia teenager Borna Coric set up a last-eight meeting with his hero Rafael Nadal by continuing his good form in Switzerland with a 6-4 6-4 victory over Andrey Golubev.
"It's going to be a great match," said Coric of his meeting with Nadal. "He's an unbelievable tennis player. It's a privilege to play against him. I hope I can play the best I can and we'll see what happens."