Complex sentence: He continued his record breaking ways in the minor leagues, where he still holds the all-time professional mark for stolen bases in a single season with 145 for Macon of the South Atlantic League in 1983.
Split into simpler sentences: He continued his record breaking ways in the minor leagues. He holds the all-time professional mark for stolen bases in a single season with 145 for Macon of the South Atlantic League in 1983.