Anyone know what the term "Clutch Putter" means?

It refers to a player who can hole out when the pressure is on, last hole of an event, tight Ryder Cup match etc. You want a clutch putter for that famous 'someone to hole a putt to save your life' scenario.
 
Yea, the term "clutch" usually refers to a person in sport who you can rely on to do a specific job when it matters.

For example, Johnny Wilkinson is a "clutch" placekicker.
 
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