Seventh seed Indian overcame stiff resistance from American Daniel Nguyen before prevailing 7-5 4-6 7-6(5) in the rain-hit final that lasted three hours and 31 minutes, turning out to be the longest summit clash in the ATP Challenger Tour history.
The match had been moved indoors at 3-3 in the deciding set after rain halted play for the fifth time.
"The funny thing is, they all kept happening on my serve," Somdev said, referring to the rain delays.
Since winning Delhi Open in February, Somdev has played 13 tournaments and struggled go beyond many Qualifiers or second rounds in main draws.
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In that context, Somdev sighed relief.
"It's huge. I've been struggling this year and it's not been for a lack of hard work. I'm working really hard on my game. It's nice to come out here and get a win. Daniel made it so hard. He's such a good competitor, such a good player."