Sportsbooks continue to expand the types of bets that can be put into parlays. Even if the Bears lost, a bettor could still win the Ravens-Packers part of the round robin. A round robin would break up that parlay into three two-team parlays (Ravens-Packers Bears-Packers Ravens-Bears). For example, an NFL bet on the Ravens, Packers, and Bears all to win as -200 favorites, all three teams would need to win for the parlay to be successful. A round robin differs from a parlay in that all legs of the parlay do not need to be successful for a bettor to win. A round robin bet is a set of events that are split up into mini-parlays that offer multiple chances to win.
