The biggest curiosity in the league ? aside from what to expect in Michael Jordan's second unretirement ? is the introduction of zone defenses and how they'll affect the game.

Legalizing zones, albeit with a 3-second restriction on camping in the lane, is the most radical NBA rule change since the 24-second shot clock debuted in 1954. So, not surprisingly, zones were a popular topic during the annual round of media conference calls with league coaches.

A sampling of what coaches are saying, now that they've had a chance to witness zones firsthand during exhibition games: