There are so many sport-specific books on the market... depends on what you're training for... Look into Nancy Clark's books, (I believe she is also a contributor to this site, and i've seen a few of her lectures - she's quite knowlegable)

I know it's not a sports nutrition book per say, but I bought the abs dietbook around 5 years ago and love it. I own a pest control and wildlife removalcompany in Orlando Florida, and I spend every day on roofs and in attics. Mywork is physically demanding like carry equipment and materials up a 40-60’ladder. I also spend a lot of time in very small attics which can be 120degrees or more, crawling around on my stomach removing large animals andreplacing damaged insulation.

It’s definitely worth checking it out.