Can I cancel a bet that I’ve already placed?

No. Bets accepted will not be changed or voided upon confirmation of the successfully placed bet. If you made an inadvertent bet on your account due to an error (e.g., inadvertent multiple identical bets), you must inform BetMGM's Customer Care team within 15 minutes of the bet being placed in order for BetMGM to consider if appropriate adjustments should be made to your account. Cancelled events that have not started or have not met the minimum length for an event to be official, will result in straight wagers being refunded. Parlays that involve a cancelled event will reduce to the next lowest number of selections.
While bets cannot be cancelled after 15 minutes of the bet being placed, for placed straight bets and parlay bets, BetMGM Sports can offer the option of an early “Cash Out.” BetMGM Sports does not guarantee to offer “Cash Out” at all times. If the bet is frozen or already closed or the respective odds have changed, the Cash Out can be rejected. For full terms and conditions please visit https://www.oh.betmgm.com/en/mobileportal/promotions/sports/cash-out