Andy Murray happy to use the underarm serve.
Nadal due on Centre Court at about 3pm against Argentina's Cerundolo Williams the last match on Centre on day two, following the Spaniard GB's Peniston faces Laaksonen on Court 12; Jubb faces Kyrgios on Court 3
The first Test against the Wallabies is in Perth on Saturday, with further encounters following in Brisbane and Sydney.
Sir Bradley Wiggins believes Ineos Grenadiers should throw their full support behind Geraint Thomas at the Tour de France, though conceded it is unlikely his former team-mate can win a second yellow jersey.