Result: Tobias Kamke retires, Stanislas Wawrinka goes through

German Tobias Kamke wipes away sweat during his second round match at the Australian Open tennis championship on January 16, 2013
© AP Photos
Stanislas Wawrinka qualifies early for the Australian Open third round after his opponent Tobias Kamke decides to withdraw at two sets down with a shoulder injury.

Stanislas Wawrinka has clinched a place in the third round of the Australian Open after Tobias Kamke retired at two sets down in their match this morning.

Kamke struggled throughout the clash with a shoulder injury and could not compete with the Swiss veteran, who broke midway through the first set to earn a 6-3 advantage.

Wawrinka showed nice variety in the second but Kamke fought back to force a deciding tie-break.

A hard-fought breaker could have gone either way but Wawrinka produced when it counted to earn a two-set advantage.

With a mountain to climb to stay in the tournament Kamke decided not to do any further damage to his injured shoulder and withdrew before the third set could get underway.

Wawrinka goes through to play Sam Querrey in round three, who in a bizarre twist also qualified earlier today when his opponent Brian Baker suffered a knee problem and had to retire.

Sam Querrey reacts after losing a point in his second round match with Brian Baker at the Australian Open tennis championship on January 16, 2013
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ATP RankingsPoints
1Scotland flag Andy Murray7,750
2Spain Rafael Nadal7,555
3Switzerland Roger Federer7,145
4Switzerland Stanislas Wawrinka5,780
5Serbia Novak Djokovic5,325
6Croatia Marin Cilic5,155
7Alexander Zverev4,470
8Austria Dominic Thiem4,030
9Japan Kei Nishikori3,285
10Canada Milos Raonic3,230
11Bulgaria Grigor Dimitrov3,070
12France Jo-Wilfried Tsonga2,770
13Belgium David Goffin2,560
14Spain Roberto Bautista Agut2,425
15Czech Republic Tomas Berdych2,390
16United States Jack Sock2,335
17Pablo Carreno Busta2,305
18Lucas Pouille2,220
19United States John Isner2,110
20United States Sam Querrey2,060