Wawrinka beaten as heat takes its toll
Unseeded American Tennys Sandgren, ranked No 97 in the world, caused a shock at the Australian Open when he ousted 2014 champion Stan Wawrinka in straight sets.
Unseeded American Tennys Sandgren, ranked No 97 in the world, caused a shock at the Australian Open when he ousted 2014 champion Stan Wawrinka in straight sets.
