Good to see Duelbits already list FIFA Club World Cup in their site, well there are a lot not really known teams, I think it's worth to bet on underdog since there's a good chance it can pull the upset. But if it's Real Madrid match, I don't want to take a risk to place a bet on the underdog because the popular team mostly will become a champion. Just like on 2016-2018 where Real Madrid win 3 streak in a row.