K:
Thanks for that brochure!
After reading thru it, number 17 (oil starvation) looks a lot like what this bearing shows. The bearing also is not round anymore. It is distorted and does not fit the cap.

17 Oil starvation
APPEARANCE
When a bearing has failed due to oil starvation, its surface is usually very
shiny. In addition, there may be excessive wear of the bearing surface due to
the wiping action of the journal. In the most severe cases the bearing surface
will be smeared or scratched and torn. The bearing will begin to turn dark blue
to black in color.
DAMAGING ACTION
The absence of a sufficient oil film between the bearing and the journal
permits metal-to-metal contact. The resulting wiping action causes premature
bearing fatigue.
POSSIBLE CAUSES
1. Insufficient oil clearance – usually the result of utilizing a replacement
bearing that has too great a wall thickness. In some cases, the journal
may be oversize.
2. Broken or plugged oil passages, prohibiting proper oil flow.
3. A blocked oil suction screen or oil filter.
4. A malfunctioning oil pump or pressure relief valve.
5. Misassembling main bearings metering off an oil hole.
6. Lubrication system not primed before start up.