Federer said Berdych would gain confidence from coming through his five - set match with Spain 's Roberto Bautista Agut in the previous round .
Federer is looking to add to his record 17 Grand Slam titles at the age of 34 .
Federer , who is looking to add to his record 17 Grand Slam titles at the age of 34 , said Berdych would gain confidence from coming through his five - set match with Spain 's Roberto Bautista Agut in the previous round .