This December, the second annual Grant Thornton Invitational in Naples, Florida will see 16 teams compete in a mixed-team competition. Lydia Ko and Jason Day, last year's winners, will return to defend their title. World No. 1 Nelly Korda and current World No. 18 Tony Finau will also be competing, after finishing T4 last year. Lexi Thompson, who has announced her final full season on the LPGA Tour, will partner with Rickie Fowler for the tournament. Tickets are now on sale for the unique and highly anticipated event, which will have equal visibility for both PGA TOUR and LPGA Tour professionals, and an equal purse of $4 million.