Jordan Spieth - 13 things you should know about "the potential next Tiger Woods"

#2 His caddie, Michael Greller was a Maths teacher

Spieth’s caddy, Michael Greller, used to be a full-time maths teacher but scrapped the algebra for golf clubs after offering to caddy for an amateur for free. He then put Greller in touch with Spieth who was looking for a caddy in a amateur competition and the duo hit it off straight away

The two hooked up at the 2011 U.S. Junior Amateur, where they won. The next year, Spieth finished as low amateur at the U.S. Open and they've been a pair ever since. Before working with Spieth, incidentally, Greller caddied at Chambers Bay, site of Spieth's U.S. Open victory in 2015.