Peter Gojowczyk has caused a major upset at the Qatar Open by knocking Philipp Kohlschreiber out of the tournament.
The world number 162 got the better of the sixth seed in straight sets 7-6(4) 7-6(7) in the second round.
Both sets went to tie-breakers and on both occasions it was Gojowczyk who emerged the victor, eventually winning the contest in one hour and 42 minutes.
Gojowczyk is participating in the tournament as a qualifier.
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