The Sport shots are tougher honestly. Having bowled on all of them, I can see why the PBA got away from the Sport shot a few years ago because people don't want to watch alot of spare shooting and this is critical on a Sport shot because the pros didn't even make the sport shot look easy and people want to see them throwing strikes. Long gone for the PBA is the sport shot pattern where 190-210 consistent would win you the matches because this was boring to viewers and sponsors. The ladies were the last pros to use the Sport shot.
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If the average isn't 300, then keep practicing and be humble!!