What was supposed to be an Australian Open warm-up turned into the ultimate grudge match after Serena Williams booked a Brisbane International semifinal against arch rival Maria Sharapova yesterday.
World No 1 Williams breezed past Slovakian ninth seed Dominika Cibulkova 6-3, 6-3 in just over an hour.
In contrast, four-time Grand Slam champion Sharapova needed two hours to finally subdue Estonian Kaia Kanepi 4-6, 6-3, 6-2 in their scrappy quarter-final.
It booked the next round in their sometimes bitter rivalry.
Relations reached an all-time low ahead of Wimbledon 2013 when Sharapova responded to Williams' chip at her in a magazine interview.