In the annals of 900 series, the most impressive arguably are Glenn Allison’s original 900 with a polyester Columbia 300 YELLOW DOT in 1982, Jeremy Sonnenfeld’s first certified 900 in 1997, and Joe Scarborough’s PBA50 Tour 900 on the Cheetah pattern in 2013. Nothing more needs to be said about Allison’s legendary series, Sonnenfeld faced the pressure of being the first certified and was crossing three pairs in a pro-am, while Scarborough also was crossing three pairs and...