Andre Iguodala reads the Wall Street Journal daily, meets with Silicon Valley CEOs for dinner on non-game nights and monitors an expansive portfolio of investments. What started as a pragmatic desire to set himself up for long-term financial stability has blossomed into a lucrative passion. During the meantime, he is content being an essential role player for the Warriors. A half-decade removed from his days as a go-to scorer for Philadelphia, Iguodala has averaged 11.1 points on 29-for-47 shooting (61.7 percent) in his past seven games. The highlight came when, with Stephen Curry and Klay Thompson laboring in the March 6 game in Atlanta, Iguodala scored a season-high 24 points on only eight shots to power the Warriors to a 119-111 win. With 221 assists, 66 steals and 50 giveaways, Iguodala leads the league in assists per turnover (4.40) and ranks seventh in steals per turnover (1.32). In the past five years, only two players have been an Eastern Conference All-Star, a gold-medal-winning Olympian for the U.S. and the most valuable player of the NBA Finals: More than any physical gift, what separates Iguodala from most players his age is his diligent self-preservation. After Golden...