Top-seeded Milos Raonic defeats Tim Smyczek at Delray Beach
Canada's Milos Raonic follows through on a return to Spain's Rafael Nadal during their quarterfinal at the Australian Open tennis championships in Melbourne, Australia, Wednesday, Jan. 25, 2017. (AP Photo/Andy Brownbill)
Tennis star Rafael Nadal
Rafael Nadal pulled out of the London Olympics on Thursday due to injury.