A lot of it has to do with how current the pattern is, as well as the type of oil used. Most of the PBA shots that are put out at local centers are several years old, left over from the days of the PBA Experience leagues. Those patterns have changed significantly. Last month I bowled in a local tournament that featured the Scorpion pattern at 41' in length. The current Scorpion pattern is 47' in length and bears no resemblance to the one used in the PBA Experience leagues.
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