Forbes released its list of the 50 most valuable franchises in sports for 2020 on Friday, and the NFL's Dallas Cowboys are once again on top. The Cowboys lead the way with a value of $5.5 billion, which is $500 million higher than last year when they also occupied the top spot. The Cowboys are followed by the New York Yankees ($5 billion), New York Knicks ($4.6 billion), Los Angeles Lakers ($4.4 billion) and Golden State Warriors ($4.3 billion).