People said they were throwing chairs, glasses and bottles at the attackers in a bid to stop them.
Summary of sports events and persons who made news on Tuesday
Polish fifth seed Agnieszka Radwanska was the highest women's casualty at the Miami Open on Saturday, blown away for the second time this year by Croatian Mirjana Lucic-Baroni.
World No 1 Serena Williams showed plenty of rust in her first competitive outing of the year ahead of the Australian Open, but battled through to defeat Andrea Petkovic in straight sets at the Brisbane International on Tuesday.
A summary of sports events and sports persons, who made news on Sunday
Photos of Day 5 of the Australian Open being played in Melbourne
PHOTOS from day four of the Wimbledon championships at the All England Lawn Tennis and Croquet Club in London on Saturday
Leander Paes is hoping that there will be not be repeat of a selection fiasco ahead of the Rio Olympics and feels he deserves to be paired with Rohan Bopanna and Sania Mirza for the men's and mixed doubles events.