Here's a great tidbit from the Elias Sports Bureau:
• Greg Maddux recorded his 3,000th career strikeout on Tuesday night when he got Omar Vizquel looking in the third inning. Maddux struck out a career-high 204 batters in 1998, and that was his only 200-SO season. Every other pitcher with 3,000 career strikeouts had at least three 200-SO seasons; most had many more: Nolan Ryan, 15 (5,714 career SO); Roger Clemens, 12 (4,440); Randy Johnson, 12 (4,292); Tom Seaver, 10 (3,640); Bob Gibson, 9 (3,117); Steve Carlton, 8 (4,136); Bert Blyleven, 8 (3,701); Gaylord Perry, 8 (3,534); Walter Johnson, 7 (3,511); Ferguson Jenkins, 6 (3,192); Don Sutton, 5 (3,574); Phil Niekro, 3 (3,342).
ETA, so of the 12 other pitchers to reach 3,000 SO's, only Phil Niekro failed to have at least 5 times as many 200 SO seasons as Maddux. Not sure what that means, but it is interesting.