The 22-year-old moved into the world’s top 25 for the first time by starting 2021 with back-to-back runner-up finishes on the PGA Tour in Hawaii.
He lost a play-off to Harris English at the Sentry Tournament of Champions and then finished a stroke behind Kevin Na at the Sony Open.
His second Open Championship start was secure once he became one of Ernie Els’s four wildcards for the 2019 Presidents Cup. He was the first Chilean to play in the match and two years earlier had been the first South American to top the world amateur rankings.
Having stayed at number one to the end of the season, Niemann was awarded the Mark McCormack Medal and with it an exemption into The 147th Open in 2018. He forfeited that by turning professional after appearing in The Masters, to which he had earned an invitation as Latin America Amateur Champion, but he was called into the field for Royal Portrush when 2004 winner Todd Hamilton withdrew.
Niemann tied for sixth at the Valero Texas Open on his professional debut in April 2018, while in September 2019 he achieved his first PGA Tour success, by six shots, at A Military Tribute at The Greenbrier.