Kohlschreiber knocked out in 1st round at Munich
The 55th-ranked Istomin saved 11 of 14 break points to win in just over two hours, setting up a second round meeting with Australian Marinko Matosevic.
It was the Uzbek's third win in three matches against fifth-seeded Kohlschreiber, the 2007 and 2012 tournament winner.
Copyright 2014 by The Associated Press
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