Second seed Somdev battled for one hour and 38 minutes to score a 7-5 6-2 win over his sixth seed rival in the third and final qualifying round.
However, it was all over for US-based Indian Prakash, who lost his final qualifying round 5-6 6-7 (0) to fifth seed American Ryan Sweeting, last night.
Somdev will have a tough start to the main draw as he faces fifth seed and world number 37 Russian Igor Kunitsyn in the first round.
In the final round match, Somdev had plenty of chances in the fiercely fought first set but could convert only three of the seven breakpoints. Alex converted both his chances but still could not stop Somdev taking lead.
In the second set, Somdev did not give much chance to the American and grabbed all three breakpoints apart from saving two on his own serve to wrap up the affair.
Published 28 July 2009, 07:22 IST