Radwanska, seeded No. 1, steamrollered unseeded Dominika Cibulkova 6-0, 6-0 in 62 minutes. She won 68 percent of the points on serve -- saving four break points -- and 69 percent when receiving serve in improving to 4-0 lifetime against Cibulkova.
Radwanska has dropped only one set in to Cibulkova -- that in the tiebreaker -- and now has four sets in which set didn't allow Cibulkova a game.
Radwanska, who won last week's season-opener in New Zealand, collected her 12th WTA championship. Five of those titles have come in the last calendar year. Cibulkova fell to 2-5 in finals appearances.
Radwanska faced three break points in the first set but still won more than 60 percent of the points in the set. She put the match away by losing just seven points over the second set to complete the shutout.
Radwanska collected $117,000 along with the championship. Cibulkova took the runner-up check of $62,300.