India's Prakash Amritraj registered a fighting win over seventh-seeded Australian Davis Cupper Chris Guccione to storm into the quarter-finals of 42,500 euros Association of Tennis Professionals (ATP) Challenger.
Prakash played two tie-breakers before winning 7-6(5), 7-6(4) at the grass courts in Nottingham on Thursday. He next plays British qualifier Joshua Goodall.
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Meanwhile, Rohan Bopanna retired from his second round match against Ukranian Sergie Bubka while leading 5-4.
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