The 28-year-old Swede dispatched Erakovic in straight sets, 6-3, 6-4, on the indoor hard courts at The Racquet Club of Memphis.
Arvidsson last won in Memphis in 2006 and was the event's runner-up two years ago.
Erakovic, of Croatia, was appearing in only her second career final after falling at the Quebec City title match last year.
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