Djokovic not sure if he can keep playing at Australian Open

An electronic signboard on Rod Laver Arena reminds patrons about the lockdown start time during the third round match between Serbia’s Novak Djokovic and United States’ Talyor Fritz at the Australian Open tennis championship in Melbourne, Australia, Friday, Feb. 12, 2021. Melbourne, Australia’s second-largest city, will begin its third lockdown on Friday due to a rapidly spreading COVID-19 cluster centered on hotel quarantine. (AP Photo/Andy Brownbill)

Serbia’s Novak Djokovic celebrates after defeating United States’ Talyor Fritz in their third round match at the Australian Open tennis championship in Melbourne, Australia, Saturday, Feb. 13, 2021. (AP Photo/Andy Brownbill)

MELBOURNE, Australia — Novak Djokovic said he tore a muscle during a fall in his five-set victory in the Australian Open’s third round and might need to pull out of the tournament.