LeBron James has been the king of the mountain — the best player in the NBA, the guy with a career trajectory that puts him on the NBA's Mount Rushmore — for nearly a decade now. This season, faced with a new challenge, LeBron stumbled. In part due to injury (and age), in part due to decisions about how to build a team around him (ideas he backed and endorsed), LeBron will be home watching the playoffs come mid-April.