Rafael Nadal is into the second round of the Australian Open after Marcos Daniel retired . Andy Murray is through after Karol Beck was also forced to retire in their match . He is joined in the next round by Argentina 's Juan Martin del Potro , who beat Dudi Sela . France 's Jo-Wilfried Tsonga came from two sets down to claim a 4-6 2-6 6-2 6-3 6-4 triumph over Philipp Petzschner of Germany . Hide Caption 1 of 9 Photos:Photos:
Rafael Nadal is into the second round of the Australian Open after Marcos Daniel retired . Andy Murray is through after Karol Beck was also forced to retire in their match . He is joined in the next round by Argentina 's Juan Martin del Potro , who beat Dudi Sela . Hide Caption 1 of 9 Photos:Photos: