Top 50 Best Pitchers in MLB History

10. Roger Clemens

Roger Clemens had a long and successful MLB career, even though he may have had some pharmaceutical help near the tail end of it. Clemens won the Cy Young Award seven times, more then any pitcher in history. His 4,672 career strikeouts are third-most all time and in 1986 he struck out a record 20 batters in a single game.