Harsh Mankad and Prakash Amritraj reached the quarterfinals of the $ 25,000 Nottingham ATP Challenger in England [Images] on Thursday.

Mankad shocked third seed Ivo Heuberger, ranked 130, of Switzerland [Images] 6-3, 7-6 (7-4) to collect 12 points.

His tally is now up to 151 ATP points that will take him to around 258 in the ATP rankings next week, which can take him into the qualifying rounds for the French Open.

He will face Flip Prpic of Sweden later in the day.

Amritraj also found the going easy as he beat Jakub Adaktusson 6-4, 6-4 to advance to the last eight.

The 21-year-old set up a quarterfinal clash against former top 100-player and the second seed Justin Gimelstob. He has also collected enough points to break into the top 300 next week.

Mankad and Amritraj will also be India's singles entries for the Davis Cup tie against Uzbekistan in Jaipur [Images] starting on April 29.

• Complete tennis coverage
• All you want to know about Sania Mirza