Complex sentence: In all, Emslie umpired for 33 years before retiring at the end of the season, after which he then served as NL chief of umpires, with the responsibilities of inspecting, scouting, and coaching new umpires.
Split into simpler sentences: In all, Emslie umpired for 33 years before retiring at the end of the season. He then served as NL chief of umpires, with the responsibilities of inspecting, scouting, and coaching new umpires.