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Tennis - World No. 1 Robert Farah had tested positive and blamed eating contaminated meat in Colombia
Tennis - Jamie Murray has partnered with brother Andy for the past three Olympics
An argument broke out in an Australian Open mixed doubles match between top-seeded pair Marcelo Melo and Barbora Strycova and Bethanie Mattek-Sands and Jamie Murray, causing a delay of more than 10 minutes.
Former world No 1 Garbine Muguruza powered into the Australian Open quarter-finals on Monday, underlining her return to form.
Germany's Angelique Kerber lost in three gruelling sets as Russia's Anastasia Pavlyuchenkova reached the quarter-finals for a third time.
Alexander Zverev ended the hot streak of his close friend Andrey Rublev to reach the Australian Open quarter-finals for the first time.