Are there more than 20 future hall members currently playing in the Major Leagues?

1. Greg Maddux, 2. Tom Glavine, 3. John Smoltz, 4. Ken Griffey Jr., 5. Frank Thomas, 6. Trevor Hoffman, 7. Chipper Jones, 8. Alex Rodriguez, 9. Derek Jeter, 10. Ichiro, 11. Mariano Rivera, 12. Pedro Martinez, 13. Randy Johnson, 14. Mike Mussina, 15. Billy Wagner, 16. Jim Thome, 17. Manny Ramirez, 18. Albert Pujols, 19.Curt Schilling 20. Berkman(If he keeps it up) 21. Utley 22.Pudge