USGA Recommended
slow 4.5' 1.4(m)
med 6.5' 2,0
fast 8.5' 2.6
US Open
slow 6.5' 2.0 (m)
med 8.5' 2.6
fast 10.5' 3.2
Fastest recorded speed Oakmont Country Club Pittsburgh 13'-15' where the Stimpmeter was developed
Wikipedia
13-15 'at the Players would be almost record breaking????
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