Complex sentence: In 1979, trainer Lefty Nickerson took over the conditioning of John Henry and when owners Sam and Dorothy Rubin decided to send the gelding to race in California, Nickerson recommended Ron McAnally.
Split into simpler sentences: In 1979, trainer Lefty Nickerson took over the conditioning of John Henry. When owners Sam and Dorothy Rubin decided to send the gelding to race in California, Nickerson recommended Ron McAnally.