Justin Thomas of the United States waves with his trophy after winning the CJ Cup PGA golf tournament at Nine Bridges on Jeju Island, South Korea, Sunday, Oct. 20, 2019. (Chun Jin-hwan/Newsis via AP)

Justin Thomas of the United States watches his shot on the 18th hole during the final round of the CJ Cup PGA golf tournament at Nine Bridges on Jeju Island, South Korea, Sunday, Oct. 20, 2019. (Park Ji-ho/Yonhap via AP)

Justin Thomas of the United States watches his shot on the 18th hole during the final round of the CJ Cup PGA golf tournament at Nine Bridges on Jeju Island, South Korea, Sunday, Oct. 20, 2019. (Park Ji-ho/Yonhap via AP)

Justin Thomas of the United States poses with his trophy after winning the CJ Cup PGA golf tournament at Nine Bridges on Jeju Island, South Korea, Sunday, Oct. 20, 2019. (Chun Jin-hwan/Newsis via AP)

Justin Thomas of the United States watches his shot on the 17th hole during the final round of the CJ Cup PGA golf tournament at Nine Bridges on Jeju Island, South Korea, Sunday, Oct. 20, 2019. (Park Ji-ho/Yonhap via AP)

Justin Thomas of the United States kisses his trophy after winning the CJ Cup PGA golf tournament at Nine Bridges on Jeju Island, South Korea, Sunday, Oct. 20, 2019. (Chun Jin-hwan/Newsis via AP)