Jordan Spieth has capped his trophy-laden season with more silverware, winning the PGA of America Player of the Year award as well as the prestigious Vardon Trophy.
Spieth, 22, on Monday became the second youngest player to win the awards in the same year after Tiger Woods achieved the feat as a 21-year-old in 1997.
The accolades came after Spieth held his nerve to win Sunday’s Tour Championship, completing a remarkable season that also included wins in the Masters and US Open.
The season-ending awards are given for excellence by a PGA Tour professional.
On Sunday, Spieth took his earnings for 2015 to just over $US22 million ($A31 million) after carding a one-under-par 69 to claim the Tour Championship at East Lake Golf Club in Atlanta, clinching the $US10 million bonus on offer to the winner of the FedEx Cup.
The win also restored Spieth’s world No.1 ranking ahead of Australia’s Jason Day.
The Vardon Trophy is given to the PGA Tour professional who posts the lowest scoring average each year.
Spieth averaged 68.911 through 91 complete rounds this season, just pipping PGA champion Day (69.161), who completed 75 rounds, by 0.25 strokes.
Spieth tallied 180 Player of the Year points, ahead of Day with 106, Bubba Watson with 52, Zach Johnson (46) and Rickie Fowler (44).
The points totals are calculated on a system factoring tournament wins, official money standings and scoring averages.