MUNICH, Germany, April 29 (UPI) -- Top seed Rainer Schuettler beat countryman Tommy Haas Thursday to reach the quarterfinals of the BMW Open in Germany.
Schuettler won 6-4, 2-6, 6-4.
Radek Stepanek of the Czech Republic beat his countryman, third-seeded Jiri Novak, 6-3, 7-5 to move into the quarterfinals.
Luis Horna of Peru also advanced when his opponent, seventh-seeded Taylor Dent of the United States, quit with an ankle injury. Horna was leading 6-4, 3-1 at the time.