Tanvi Shah of Maharashtra and Delhi's Karun Uday Singh won the boys and girls' under-16 singles and doubles crowns respectively in the Xtra Premium National Series Tennis Championship at Practennis courts in suburban Andheri, Mumbai, on Saturday.

In a battle of unseeded players, Karun Uday Singh overcame Maharashtra's Debendra Das 6-4, 6-3 in the boys' under-16 final that lasted 70 minutes. The crucial break came in the 10^th game.

Das fought back by breaking in his opponent's opening service game in the second set only to see Singh restore parity immediately by winning the next game.

The Delhi boy broke Das's serve twice again to lead 5-2 before the latter pulled one back to make it 5-3.

But Singh held his nerve and served out for the title.

Karun then partnered Parul Verma to beat Ankit Sachdeva and Shiva Sangwan in the doubles title clash.

Tanvi Shah rallied from 0-4 down in the opening set to score a 7-6 (7-4) 4-1 victory, her pponent in the final, unseeded Sonia Dayal, conceding the tie at 30-all in the sixth game of the girls' under-16 final.

Later, Tanvi teamed up with Prachi Nadkarni to beat J Kesika and Sharon Paul 6-4, 6-2 for the under-16 girls' doubles title.