The unseeded Indian lost 2-6 0-6 to the American fifth seed in the second round of the USD 442,500 grass court event. Somdev had lost to Fish at Aegon Classic championships in London last month.
Somdev had his chances but Fish was too good for the Indian as the American kept his cool to save as many as five breakpoints.
Fish on the other side broke Somdev twice in the opening set and just trampled him in the second set, not letting the Indian to even get on the board.
The defeat means that Somdev, who is now ranked 107, will have to wait a bit more to break into top-100.
He earned 20 ranking points and USD 7,260 for reaching the second round.