"It was obviously a business decision for one and an offer I couldn't ignore."
The Florida-based Queenslander also said the reduced Liv Golf schedule compared to the PGA Tour meant he could spend more time back home.
"The biggest thing for me joining is [Liv's] schedule is really appealing," Smith told Golf Digest. "I'll be able to spend more time at home in Australia and maybe have an event down there, as well. I haven't been able to do that, and to get that part of my life back was really appealing."
"I've lived over here seven years now, and I love living in the U.S., but just little things like missing friends' weddings, birthday parties and seeing your mates having a great time at rugby league games has been tough," he said.
He could have reached No 1 with a victory at the start of the FedEx Cup playoffs. Now, that opportunity is gone. Liv Golf does not get ranking points, though it filed an application last month.
The PGA Tour is suspending members as soon as they put a ball in play at Liv Golf events.
Others to sign are Marc Leishman, a six-time PGA Tour winner from Australia who at age 38 has dropped out of the top 50 in the world, and three others who leave without ever having won on the PGA Tour — Americans Harold Varner III and Cameron Tringale and Anirban Lahiri of India.
Smith and Niemann, who is from Chile, were among the eight qualifiers for the International team at the Presidents Cup, which will be played in a month at Quail Hollow. Leishman and Lahiri previously have played in the matches.
Because the PGA Tour exclusively operates the Presidents Cup — unlike the Ryder Cup, which Europe operates on home soil — players who join Liv Golf are not eligible.
It could open the door for Kiwi Ryan Fox to play in the Presidents Cup with International captain Trevor Immelman having to replace two players as well as name his four captain's picks with Fox in the mix along with K.H. Lee, Erik Van Rooyen, Sebastian Munoz and Adam Hadwin.
Niemann, 23, considered joining the rival league in February until Phil Mickelson's disparaging comments about the Saudis and the PGA Tour stalled the launch of Liv Golf. Niemann then won the Genesis Invitational at Riviera and cited the competition and history as reasons he wanted to stay on the PGA Tour.
But all his best friends in golf have joined the rival series — Carlos Ortiz and Abraham Ancer of Mexico, Sergio Garcia of Spain — and they often shared a house and brought in their own chef for the week. His manager, Carlos Rodriguez of GSE Worldwide, said Niemann still had not signed a Liv Golf deal when he flew to Boston on Monday.
Along with winning the British Open for his first major, Smith won The Players Championship in March by one shot over Lahiri. Paul Casey was two shots behind, and now all three players have joined Liv Golf.
Along with big signing bonuses — The Daily Telegraph reported US$150 million for Smith — players complete for US$25 million in prize money at each of the Liv Golf Invitational events.
The Boston event is at The International, which about 45 minutes west of Boston. Liv Golf takes off next week because of the European tour flagship event at Wentworth in England, and then returns Sept. 16-18 to the Chicago suburbs.
