What year is the second picture from? He looks quite a bit older than in the first one.
My dad and brother both went from having a pretty full head of hair at 17 to being mostly bald by 25. Happily I escaped that fate, though my hair has definitely thinned considerably in my 50’s and early 60’s, and I’ve had a lot of gray for a long time.
The fact that he did well in AAA is worth mentioning just as much as his AFL time, as is his decent but not great AA performance before his promotion. Considering he had nearly five times as many at bats in AA as in AAA, I’d say the AA is the most important. And it certainly wasn’t bad, .740 OPS in a pitcher-friendly league. But I’d like to see Bannon get some more time in AAA to show that his good numbers there weren’t just a small sample fluke. And, I think the burden of proof for guys not already on the 40-man roster is very high, because selecting them means kicking someone else off. From a roster management point of view, the more prudent course is to give the benefit of the doubt to someone already on the roster, or someone not on the roster who has an opt-out (if there is an infielder in that position). Bannon can always come up later.