In a huge US Open morale booster, Gavrilova outclassed the former grand slam finalist and world number 2 6-4, 6-4 to set up a championship showdown with Dominika Cibulkova.
Gavrilova is chasing her maiden WTA Tour title after losing the final in Strasbourg in May to fellow Australian Samantha Stosur.
The 23-year-old will be brimming with confidence after guaranteeing herself a big rankings rise after holding her nerve to end Radwanska's six-match winning streak in New Haven.
Serving for the match at 5-4 in the second set, Gavrilova saved a break point with her second ace before closing out the contest in one hour and 33 minutes.
Gavrilova is projected to climb to number 22 in the world — and will crack the top 20 for the first time if she beats Cibulkova, the Slovakian former Australian Open runner-up who progressed to the final with a 6-1, 6-3 win over Belgian qualifier Elise Mertens.
- Gavrilova upsets defending champ Radwanska at Connecticut OpenCT Post
- Cibulkova Advances to Connecticut Open Final With Straight Set WinHartford Courant
- Cibulkova punches ticket for Connecticut Open finalCT Post
- Connecticut Open: Gavrilova upsets defending champ RadwanskaNew Haven Register
- Radwanska, Cibulkova reach New Haven semisGulf Times
- Cibulkova eases into New Haven finalSport24
- Gavrilova upsets Radwanska in Connecticut Open semifinalsNews & Observer
- Tennis - Cibulkova and Gavrilova to meet in Connecticut finalReuters India
- Dominika CibulkováEurosport.com