Complex sentence: Heart problems forced Polk to resign after the 1960-61 season; when he left, Polk was the leader in wins for the Commodores (197-106.650) and had won the 1951 SEC Tourney.
Split into simpler sentences: Heart problems forced Polk to resign after the 1960-61 season. When he left, Polk was the leader in wins for the Commodores (197-106.650) and had won the 1951 SEC Tourney.