Depends on if they are professional or amateur.
There are over 800 professional sports teams that are measured by www.qlobal.com.
There are probably just as many or more professional teams out there that arent measured.
There must be hundreds of millions of amateur teams out there. Just as an example there are approx 200 million soccer players registered in the world. A minimum of 11 players to a team means there are approx 18 million teams -just for soccer! Add to that cricket, Basketball etc etc and the number would be very very big!
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