Austrian Melzer pass on to the quarter-finals of the Stuttgart Grand Prix
The defeat Tesfyrev ranked 150 on the world, leaving three players Germans only in the tournament.
Melzer will meet second seed on Friday with Spain's Alberto Montas, who beat fifth-seeded Argentine Juan Chela 7 / 5 and 3 / 6 and 6 / 2 in more than two hours, amid a wave of warm weather will continue for a third day in a row.
The Tesfyrev who share wildcard (Wild Card) beat Melzer one month before the tournament in Halle on grass.
Melzer and achieved victory in 30 games versus 15 in defeat, having won the twelfth him on clay in 2010.
Montas will take part in the fifth game of his quarter-final this season after the overthrow of Bchila, who won the only confrontation that brought them six years ago in Acapulco.
Montas was crowned champion in Achturel last May after he defeated Roger Federer in the semi-finals.
