Caution flags: "30 for 30" focuses on Tim Richmond's wild ride

Though I have great admiration for ESPN's "30 for 30" documentary series, which highlights a wide range of extraordinary, sports-related stories, I don't write about it much, for a few reasons. For one thing, though I have some rudimentary sports knowledge, I can't speak with great authority on most of the topics covered in the films. Thus, I'm worried I'll look like a moron if I write about them.
Also, I simply don't always have time to write about them before they air. But I have made an exception in the case of this week's offering "Tim Richmond: To the Limit," which airs 8 p.m. Tuesday on ESPN.