Chilean young blood Christian Garin proved he could excel on hard surface as he downed Estonian former world No 71 Jurgen Zopp 6-3 7-6 (7-4) to reach his first semi-final in a hard-court Challenger in the US$50,000 Bangkok Open 2 on Thursday.

Sixth seed Alexander Sarkissian of the United States beat Thai wild card Phassawit Burapharitta 75 26 61 in a rain interrupted match at the US$50,000 KPN Renewables Bangkok Open Challenger at Rama Gardens Hotel on Monday.