AdvertisementNationalOpen season Is Ralph Lauren’s era at the Australian Open over? Australian retired swimmer Ian Thorpe at an Australian Open Ralph Lauren event. AdvertisementBoth Tennis Australia and Ralph Lauren declined to comment on whether the brand’s era at the Open was coming to an end. The Australian Open was the third of four grand slams sponsored by Ralph Lauren including Wimbledon and the US Open. Sounds like fans of Ralph Lauren’s Australian Open-branded caps for $109 or windbreaker jackets for $579 should stock up now.