NFL Fever 2000 Codes -

Toggle head size:
Hold [Left] and quickly press [Huddle] five times while on the field after a play has completed to toggle player head sizes from small to large to normal.

Large football:
Hold [Right] and press [Hurdle] five times while on the field after a play has completed.

Hint: Gain extra yards on kick/punt returns:
When you receive the ball, start running left or right until about the out of bounds mark. Then, run straight across the opposite way of where you received the ball. Do this until the opposite out of bounds mark, then run forward. If done correctly, this should be an automatic touchdown.

Hint: More completions:
When on offense, throw the ball two or three seconds off the line to make more completions.