How Louis Rees-Zammit, former Welsh rugby star, plans to make NFL transition

KANSAS CITY, Mo. — Before he touched the ball with 21 other players on the field alongside him Monday, Louis Rees-Zammit needed to get his various techniques correct. Rees-Zammit listened and observed how Porter Ellett, Kansas City Chiefs’ assistant running backs coach, placed his feet and bent his knees before stepping forward. A few minutes later, Ellett corrected Rees-Zammit again, as his hands were not in the proper spot to block a blitzing defender. Rees-Zammit’s new position (running back) within a new job (with the Chiefs) within a new sport (the NFL) has required different footwork from him, too. “It’s...