Top-seeded Tipsarevic knocked out in Munich
Kohlschreiber defeated Viktor Troicki of Serbia 6-3, 7-6 (3). He is bidding for his third Munich title after also winning in 2007.
Haas, a finalist in 2000, is bidding to win the title for the first time on his 10th appearance.
"It's perhaps my last chance to win here," the 35-year-old Haas said.
Copyright 2013 by The Associated Press
This story is from ESPN.com's automated news wire. Wire index
MORE TENNIS HEADLINES
- Serena, Djokovic selected as ITF world champs
- Berdych brings on ex-Murray coach Vallverdu
- Indian Aces win inaugural IPTL exhibition event
- All 100 top-ranked men set for Aussie Open