An Interview with "Strokes of Genius" author L. Jon Wertheim by Karen Flax-Jardine To diehard tennis fans L. Jon Wertheim is known for writing the weekly "Tennis Mailbag" for the SI.com website. Wertheim is a senior member of Sports Illustrated's staff and an author of several books including "Venus Envy" (HarperCollins 2001).  Wertheim … [Read more...] about Seven Questions with “Strokes of Genius” Author L. Jon Wertheim