The deal, in part, was due to Ronaldo's expansive fan base and social media outreach.
Ronaldo reaches 262 million people worldwide via social media. The soccer phenom has 120 million followers on Facebook (FB) - Get Report, 92 million on Facebook's Instagram, and 50 million on Twitter (TWTR) - Get Report.
Ronaldo's broad outreach on social media presents a substantial opportunity for Nike as the company can tap into his fan base. His presence on social media alone generated some $474 million in media value for Nike in 2016, according to report by Hookit.
If that holds, Nike can recapture its $1 billion investment in Ronaldo in just over two years.