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Jordan Spieth's caddy is on track to become a millionaire this year.
jordan spieth masters picture Annie Verret to celebrate Masters win .
Michael Greller -- caddie for Masters champ Jordan Spieth and a former local looper at Chambers Bay -- gives an inside peek at the three holes where the U.
Michael Greller was a sixth-grade math teacher moonlighting as a part-time caddie.
Jordan Spieth and his caddie, Michael Greller, look over a putt on the green on Sunday.
Jordan Spieth to caddie after bad shot: 'What were we thinking, dude?