Complex sentence: Ryan led the American League in strikeouts seven times during his eight seasons with the Angels, but he also led the league in walks in six of those years, and finished second the other two seasons: 1975 and 1979.
Split into simpler sentences: Ryan led the American League in strikeouts seven times during his eight seasons with the Angels. However, he also led the league in walks in six of those years, and finished second the other two seasons: 1975 and 1979.