Nate Jackson: Ex-Bronco's memoir, like its author, beats the NFL odds

There are plenty of reasons to read Slow Getting Up: A Story of NFL Survival from the Bottom of the Pile, Nate Jackson's breezy account of his struggles as a mostly backup player for six seasons. It's grimly funny, surprisingly well-written, bristling with backstage stuff without seeming gossipy, rueful without the self-pity and narcissism found in most jocks' memoirs. But Denver Bronco fans should find it particularly revealing, since most of Jackson's career was spent right here, scrambling to find a spot on the team in the deepening twilight of the Shanahan era.