Bet on Cardiff vs Millwall on Saturday, 21 August. With the Smarkets exchange, you can back or lay your bets on the clash between Cardiff and Millwall on Saturday, 21 August. This game has 72 markets available to bet on. The popular markets so far are Full-time result, Correct score, Both teams to score and Double chance. The favourites to win the game between Cardiff and Millwall as of publication are ERR who are priced at odds of ERR. The odds of a draw are ERR while the odds for ERR to win are ERR. A US$10.00 back bet on ERR to win returns ERR, whereas a US$10.00 back bet on ERR to win are ERR. If you think neither side will come away with the victory, betting the same amount in a back bet on the draw would win you ERR. As Smarkets is an exchange, you can also place lay bets on all outcomes for Cardiff vs Millwall. You can also use the bet calculator to help you calculate potential winnings.