Muguruza fights to reach Brisbane quarters

Spanish fourth seed Garbine Muguruza battled past Darya Kasatkina of Russia into the quarter-finals of the Brisbane International on Tuesday. 

In a match lasting just over three hours, Muguruza, the 2016 French Open champion, got past unseeded Russian Darya Kasatkina (Russia) 7-5, 3-6, 7-6(7) saving a third set tie-break match point to eventually win.

The opening set had seven breaks of serve before Muguruza claimed her opponent's serve in the 11th game and then served out the set to win it 7-5.

To her credit, the Russian came back strongly in the second set to lead 3-1 breaking Muguruza's serve twice to square things up with a set apiece when she won the set 6-3.

The set was a close one with three service breaks apiece for the match needing to be decided with a tie-break. At 5-6 in the breaker, Kasatkina saved a match point and then Muguruza saved a match point herself when behind 6-7.

But in the end, the fourth seed won the tie-break 9-7 on her second match point to claim a marathon victory.

In other second round action, sixth seed Elina Svitolina of Ukraine beat American Shelby Rogers 7-5, 2-6, 7-5, unseeded Frenchwomen Alize Cornet saw off Christina McHale of the US 6-2, 6-1 while third seed Karolina Pliskova of the Czech Republic beat another American, Asia Muhammad, 6-1, 6-4.

In a first round match, Australia's Destanee Aiava defeated Bethanie Mattek-Sands of the US 2-6, 6-3, 6-4.