By Jahmal Corner LOS ANGELES, March 18 (Reuters) - New York Knicks swingman J.R. Smith came face-to-face with his fiercest competition for the Sixth Man of the Year Award in Sunday's game against the Los Angeles Clippers and saw what a successful career turnaround might look like. The Clippers' own super sub, Jamal Crawford, stands in the way of the trophy given to the National Basketball ...