Australian Open finalist Alexander Zverev wasted a big third-set lead as he suffered a second straight quarter-final defeat in South America, 4-6, 6-3, 6-4 against Argentine Francisco Comesana in Rio de Janeiro.

Argentinian Francisco Comesana stunned Australian Open finalist and world number two Alexander Zverev on Friday with a 4-6 6-3 6-4 win in the quarter-finals of the Rio Open, the biggest win of his career so far.

Argentina's world number 86, Francisco Comesana delivered a stunning performance at the Rio Open on Friday. He defeated the Australian Open finalist and world number two Alexander Zverev 4-6, 6-3, 6-4 in the quarter-finals. This win is a major milestone in Comesana's career as it is his first-ever victory over a top-five opponent.

Alexander Zverev had to work hard in the second round of the ATP 500 event in Rio. World no. 2 defeated Alexander Shevchenko 7-6, 7-6 in two hours and 28 minutes for a place in the quarter-final.

Francisco Comesana will compete in his first ATP semi-final at the ATP 500 tournament in Rio. The Argentine scored his career-best victory in the quarter-final, stunning world no. 2 Alexander Zverev 4-6,

Friday's win in Rio de Janeiro is the 24-year-old Francisco Comesana's first victory over a top-five ranked opponent.

BREAKING: Trump abruptly fires Joint Chiefs Chairman, other top Pentagon leaders US military releases first photo from orbit from its mysterious space plane After Vladimir Guerrero Jr Loss, Blue Jays Urged to Course Correct By Extending Their 2x All-Star's Deal New TSA Rules: How to Pack Medications for Travel in 2025!

The quarterfinals at the ATP Rio Open are set, and some unexpected names have emerged. This has not been a good week for the seeded players, but the top seed, Alexander Zverev and defending champion,