#3 - Tiger Woods Scotty Cameron Newport 2.0

Tiger Woods won 13 of his 14 majors with the same Scotty Cameron Newport putter in his bag, with it completing "Tiger Slam" in 2001 when holding all four majors at the same time.

While this Circle-T Woods model putter that was sold for $23,000 wasn't Tiger's actual gamer, it was an exact copy made by Scotty Cameron to serve as a backup in case something untoward happened to Woods' original. 

The putter was stamped with Tiger Woods on the bumpers and T.W. etched on the face.