It could be tempting to write off Novak Djokovic at this point, to think he might be closer than ever to being done competing for Grand Slam titles and closer than ever to retirement, where his greatest on-court rivals — Roger Federer, Rafael Nadal and Andy Murray — already reside.
Perhaps those sorts of thoughts are natural in the immediate aftermath of Djokovic's exit from the Australian Open semifinals on Friday with a torn leg muscle. He was booed off the court when he quit right after dropping the first set against Alexander Zverev, an abrupt end to Djokovic's pursuit of an 11th trophy at Melbourne Park and an unprecedented 25th major championship overall.
