Tito Ortiz bets on fights?

I was listening to the interview Luke Thomas did with the writer from the Atlantic who did the piece on Rampage. Partway through it the guys says Ortiz is a "guy who bets on fights". It's kind of a throwaway line, but whoa...bets on whose fights? Right at the 21:35 mark of the interview. Long-ass interview by the way.
I know MMA isn't baseball, but is this something that could be an issue?