Complex sentence: The next spring after the World Series, Dressen urged Black to add some pitches to his strong slowball was his favorite pitch6 seasons, he compiled a 30-12 record, half of his wins coming in his rookie season.
Split into simpler sentences: The next spring after the World Series, Dressen urged Black to add some pitches to his strong slowball, which was his favorite pitch. In six seasons, he compiled a 30-12 record, half of his wins coming in his rookie season.