What would cause this weird bearing wear?

I agree with marksmopar1. crank's need to be perfect for the longevity of the motor. when I was taught how to build motors over 35 year's ago those old school motor heads were using non detergent motor oil (30w) for engine assembly lube and they never had any bearing failure. they said assembly oil is just for that. the need to pre-lube (prime the system) before the first start up was critical. I remember priming on them engines for half an hour and turning the crank over every two to five minutes (under there close supervision and smart remark's of my stupid youth) before we fired them and then we would run them at 2k rpm for another half hour. with all the new assembly lube on the market I doubt that is a problem.