He finished last year ranked 19th on the Asian Tour Order of Merit with six top-10s.
“I’m super excited to get to Auckland for the return of professional golf,” Smyth said.
“I’ve heard the golf course is immaculate and I’ve never been to Auckland before so I’m pumped.”
Koepka finished equal fifth in the Quinovic NZ PGA Championship at Paraparaumu Beach last week and had two top-10s on the Asian Tour in 2025.
Nick Dastey, general manager of tournaments and global tour relationships for the Challenger PGA Tour of Australasia, said: “We are thrilled to welcome John, Chase and Travis to the first ISPS Handa Japan-Australasia Championship. Their inclusion adds significant weight to the field for the tour’s return to Auckland.”
The ISPS Handa Japan-Australasia Championship completes a landmark three-week professional golf swing in New Zealand that began with last week’s Quinovic NZ PGA and continues this week with the New Zealand Open presented by Sky Sport.
All four rounds of the ISPS Handa Japan-Australasia Championship will be broadcast on Kayo, Foxtel and Sky Sport.