Kammerstad was born without some bones, and a lack of muscles in his right leg.

The Swede, a four-time European Champion, won the ISPS HANDA Australian All Abilities Championship for the second year running in 2019 as he beat Kurtis Barkley in a sudden-death play-off at the end of the 72-hole tournament at The Australian Golf Club in Sydney.

With the next two editions unable to take place due to the Covid-19 pandemic, Kammerstad was one of four golfers to participate in the first ever ISPS Handa All Abilities Champions Playoff in Hawaii in January of 2022, staged while the first and second rounds of the PGA TOUR’s Sentry Tournament of Champions took place.