England's Adrian Waller took just 21 minutes to earn a place in the semi-finals of the 'Tour De Las Americas' Regatas Resistencia Open in Argentina as he bids to win his third successive PSA World Tour squash title in South America in two weeks.

The 21-year-old from Enfield despatched local hope Robertino Pezzota, a 28-year-old qualifier from the Argentinean city of Rosario, 11-3, 11-6, 11-4 in the quarter-0finals of the PSA Challenger 10 event in its first year at the Club Regatas Resistencia in Resistencia.

In a replay of May's Cerdil Open final in Brazil and last week's Paraguay Open climax in Asuncion - both of which he won in five games - third seed Waller will now face top seed Jan Koukal.

The Czech number one needed 45 minutes to see off another Argentina qualifier Hernan D'Arcangelo 14-16, 11-9, 11-6, 11-9.

Brazilian Rafael F Alarcon leads South American interest in the other semi-final. The No2 seed from Sao Paulo survived a lengthy third tie-break game to beat Canadian Adrian Dudzicki 11-7, 11-4, 21-19 and will now face North American hope Christopher Gordon.

The New York-born fourth seed - playing in his first Tour event south of the border this year - battled for 90 minutes to overcome Welshman Peter Creed 11-13, 11-3, 11-9, 9-11, 11-7.

RESULTS: PSA Challenger 10 'Tour De Las Americas' Regatas Resistencia Open, Resistencia, Argentina

1st round:
[1] Jan Koukal (CZE) bt Juan Pablo Roude (ARG) 11-9, 11-6, 11-6 (31m)
[Q] Hernan D'Arcangelo (ARG) bt [Q] Matias Valenzuela (ARG) 11-8, 11-2, 6-11, 11-8 (56m)
[Q] Robertino Pezzota (ARG) bt Dane Sharp (CAN) 11-7, 6-11, 14-12, 11-3 (46m)
[3] Adrian Waller (ENG) bt Fernando Molina (ARG) 11-5, 11-4, 11-5 (27m)
[4] Christopher Gordon (USA) bt Gonzalo Miranda (ARG) 10-12, 11-4, 11-4, 11-7 (45m)
Peter Creed (WAL) bt Steven London (ENG) 11-6, 11-8, 11-7 (37m)
Adrian Dudzicki (CAN) bt Fernando Lopez (MEX) 11-4, 11-7, 5-11, 11-7 (29m)
[2] Rafael F Alarcon (BRA) bt [Q] Vinicius Rodrigues (BRA) 12-10, 11-6, 11-7 (28m)

Quarter-finals:
[1] Jan Koukal (CZE) bt [Q] Hernan D'Arcangelo (ARG) 14-16, 11-9, 11-6, 11-9 (45m)
[3] Adrian Waller (ENG) bt [Q] Robertino Pezzota (ARG) 11-3, 11-6, 11-4 (21m)
[4] Christopher Gordon (USA) bt Peter Creed (WAL) 11-13, 11-3, 11-9, 9-11, 11-7 (90m)
[2] Rafael F Alarcon (BRA) bt Adrian Dudzicki (CAN) 11-7, 11-4, 21-19 (44m)

Semi-final line-up:
[1] Jan Koukal (CZE) v [3] Adrian Waller (ENG)
[2] Rafael F Alarcon (BRA) v [4] Christopher Gordon (USA)