In the women's draw, defending champion Petra Kvitova, who has only dropped three games, faces Serb 28th seed Jelena Jankovic.

Kvitova has a 4-2 lead over Jankovic but the two have never met at a Grand Slam.

Fifth seed Caroline Wozniacki faces Camila Giorgi trailing 2-1 in their career meetings.

Giorgi defeated the Dane at the 2013 US Open.

Wimbledon order of play on the show courts on Saturday, the sixth day of the 2015 tournament at the All England Club (x denotes seeding):

Centre Court (1200 GMT)

Samuel Groth (AUS) v Roger Federer (SUI x2)

Jelena Jankovic (SRB x28) v Petra Kvitova (CZE x2)

Andreas Seppi (ITA x25) v Andy Murray (GBR x3)

Court One (1200 GMT)

Caroline Wozniacki (DEN x5) v Camila Giorgi (ITA x31)

James Ward (GBR) v Vasek Pospisil (CAN)

Gael Monfils (FRA x18) v Gilles Simon (FRA x12)

Court 2 (1130 GMT)

Garbine Muguruza (ESP x20) v Angelique Kerber (GER x10)

Timea Bacsinszky (SUI x15) v Sabine Lisicki (GER x18)

Tomas Berdych (CZE x6) v Pablo Andujar (ESP)

Court 3 (1130 GMT)

Viktor Troicki (SRB x22) v Dustin Brown (GER)

Jo-Wilfried Tsonga (FRA x13) v Ivo Karlovic (CRO x23)

Court 12 (1130 GMT)

Nikoloz Basilashvili (GEO) v Roberto Bautista Agut (ESP x20)

Madison Keys (USA x21) v Tatjana Maria (GER)

Court 18 (1130 GMT)

Kristyna Pliskova (CZE) v Monica Niculescu (ROU)

Agnieszka Radwanska (POL x13) v Casey Dellacqua (AUS)

Magdalena Rybarikova (SVK) v Olga Govortsova (BLR)
Source: AFP