Prop betting seeks to proposition the bettor with a question, one that may or may not have a direct bearing on the final score. For example: How many receiving yards will Tyreek Hill have?
A tri bet is a special type of margin bet that splits the range of possible points margins in a match into three outcomes. Team A to win by 15.5+ points, Either Team A or Team B to win by under 15.5 points and Team B to win by 15.5+ points.