Dolphins vs. Steelers: 1H O/U 20.5

In the first half of the NFL game between Dolphins and Steelers, scheduled for December 15 at 3:15 PM ET: This market will resolve to "Over" if the Dolphins and Steelers combine to score 21 or more points in the first half. If the combined first half total is less than 21, this market will resolve to "Under". The result will be determined based on the score at halftime only. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50.