Unseeded Bradley Hindle survived the longest match in the quarter-finals of the inaugural Valencia Open to claim an unexpected place in the last four of the PSA World Tour Challenger 15 squash event at Maestro Serrano in Valencia, Spain.

The 30-year-old from Malta fought back from 2/1 down to overcome Mark Krajcsak, the fourth seed from Hungary ranked 19 places higher, 11-7, 6-11, 7-11, 11-5, 13-11 in 85 minutes.

Hindle's next opponent took less than half the time to earn his place in the semi-finals. Borja Golan, the top seed leading home hopes in Valencia, despatched English qualifier Olivier Pett 11-7, 11-8, 11-2 in 40 minutes.

Max Lee continued his impressive run in his first appearance in a Tour event in Spain. After ousting third seed Chris Simpson in the opening round, the unseeded 23-year-old from Hong Kong took five games to get the better of New Zealander Campbell Grayson, winning 5-11, 13-11, 11-9, 2-11, 12-10 in 65 minutes.

Lee now lines up against second seed Omar Abdel Aziz, the world No42 who survived a close second game to defeat unseeded Frenchman Gregoire Marche 11-4, 12-10, 11-7.

RESULTS: PSA Challenger 15 Valencia Open, Valencia, Spain

Quarter-finals:
[1] Borja Golan (ESP) bt [Q] Olivier Pett (ENG) 11-7, 11-8, 11-2 (40m)
Bradley Hindle (MLT) bt [4] Mark Krajcsak (HUN) 11-7, 6-11, 7-11, 11-5, 13-11 (85m)
Max Lee (HKG) bt Campbell Grayson (NZL) 5-11, 13-11, 11-9, 2-11, 12-10 (65m)
[2] Omar Abdel Aziz (EGY) bt Gregoire Marche (FRA) 11-4, 12-10, 11-7 (45m)

Semi-final line-up:
[1] Borja Golan (ESP) v Bradley Hindle (MLT)
[2] Omar Abdel Aziz (EGY) v Max Lee (HKG)

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