The nba has serious officiating problems. More challenges should be allowed by coaches.
No. Not good enough.
They need 3 guys with a monitor in front of them on the sidelines. They review EVERY SINGLE PLAY within 5 seconds by just hitting a 3 second rewind, and pressing an associated button: "play on", "foul", "out of bounds" etc.
Takes 10 seconds tops, decreases number of incorrect calls by a HUGE percentage.
Extra challenges just slow the game down.