"I think the advantage I had over Popp is this was his first final and it was my 25th."
It was the 14th tournament victory of Rusedski's career but his first final since winning the Nottingham Open in June 2003.
Neither player lost his serve in the final as Rusedski saved four break points and Popp three. Rusedski hit 11 aces in the final, lifting his total for five matches in the tournament to 63.
Popp, whose mother is British, said: "I just lost the match because he served a little better."
Rusedski now moves on to Los Angeles for the Mercedes-Benz Cup where he meets American Taylor Dent in the first round.