The South African was runner-up in the opening event of the season, the Riegler and Partner Legends, having carded three successive rounds of 67 – before losing a play-off against Adilson da Silva on the first extra hole.
Horne finished in 3rd place at the WCM Legends Open de France later in the year and would record three more top ten finishes in his rookie season to finish 12th on the Order of Merit.
He played in 233 DP World Tour events across 14 years and came closest to a victory when he was runner-up at the 2010 Joburg Open.
Horne only turned pro at the age of 25 but has won 12 times Worldwide, including nine on the Sunshine Tour.