Understanding Full Roller Bowling Styles: PBA & Two-Handed Techniques

Question
My question is who is an example of a full roller in the PBA? I'm just curious and trying to get an idea what a full roller is.

Answer
There are not any traditional full rollers on the PBA.  
Some of the two handed bowlers will have a ball track like a full roller though.  
A full roller is defined as a  bowler that has a ball track the goes between the thumb and finger holes.

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