Every high level of football in fact. I was at a coaches conference this spring. One of the keymotes wss a CFL head coach between jobs. He said he did a statisical analysis of NFL, CFL US and Canadian College over a five year period. It was clearly the most important statistical key to victory. If you were plus one in takeaway giveaway you had this percent better chance of winning. Now this doesnt mean that you can give up 500yds and time of posession and everythinv else and win with one extra turnover. But in a four game stretch if you are -4-5 you will be lucky to be 1-4. Guarenteed.
