Who won more money on the PGA Tour this year, Shane Lowry or Jordan Spieth’s caddy?

It is very hard to fault the world's number one golfer Jordan Spieth.

Modest yet competitive, the Texan seems to be very loyal to his family and unfailingly polite to friends and foes. Plus he won $22million this year. Spieth topped off an amazing season by winning the hugely lucrative Tour Championship last night - the $10m bonus almost doubling the $12,030, 465 he had already won during a year that saw him claim the Masters and US Open before finishing second at the British Open and in a tie for fourth at the PGA Championship. On his bag yesterday at East Lake, Atlanta was, as usual, his good friend Michael Greller. They are together since the 2011 US Junior Amateur Championships when the pair clicked and Greller decided to take a leave of absence from his job as a coach. The gamble has paid off, in a major way. https://twitter.com/JasonSobelESPN/status/648250977569644544 Assuming Spieth pays his bagman the customary 10%, Greller's slice of $22,030,465 is $2,203,046.50, which is more than the majority of pros on the PGA Tour. But is it enough to take him past WGC Bridgestone champion Shane Lowry? Let's just remind ourselves how Lowry went about his business at Firestone back in August. https://twitter.com/EuropeanTour/status/646006258848296960 The Offaly golfer also finished ninth at the US Open and was seventh at the Farmers Insurance Open back in February. In total the World No44 won $2,298,516.50 on the PGA Tour, giving him a $96,000 advantage over Greller. Lowry's best season yet saw him finish 37th on the money list, which means Greller earned more carrying Spieth's clubs than the vast majority of golfers won in 2015. Those overshadowed by Greller includes Phil Mickelson, Ian Poulter, Keegan Bradley and Adam Scott. Rory McIlroy described 2015 as a "lost year" after the combination of an ankle ligament injury and indifferent form saw him slip to third in the world behind Spieth and Jason Day. He missed the British Open through injury but still managed to win the WGC-Cadillac Match Play and Wells Fargo Championship in May, which helped him win $4,863,312.00. If that is what McIlroy calls a lost year, there are plenty of people who wouldn't mind finding it.