Alexander Zverev made a spirited defense of embattled world number one Novak Djokovic on Saturday (January 15), saying his legacy will not be tarnished by the visa saga which has rocked the tennis world ahead of the Australian Open. Djokovic arrived in Melbourne with a medical exemption from Australia’s requirement for visitors to be vaccinated for COVID-19 but had his visa canceled first on arrival and then again on Friday after he won a court case earlier in the week. His hopes of winning a record 21st Grand Slam title at the Australian Open could be ended by the outcome of another court case on Sunday. However, Zverev said Djokovic was still a towering figure in the sport. “I don’t know what the perception around the fans is,” he told the media. “I know that in the sport he’s still seen one of the greatest players because his achievements are not taken …