Robredo advances to Warsaw quarterfinals

WARSAW, Poland -- Second-seeded Tommy Robredo reached the Warsaw Open quarterfinals Thursday after Wayne Odesnik retired while trailing 6-4, 1-1.

Fifth-seeded Guillermo Canas also advanced after defeating Santiago Ventura 6-2, 1-6, 6-3.

Oscar Hernandez ousted fellow Spaniard Albert Montanes 6-3, 6-2.

Fabio Fognini advanced after Christophe Rochus retired while trailing 5-4.