1. What is Over/Under 2 3/4? The over/under bet 2 3/4, known by expressions such as 2.75 or 2.5-3, is a popular type of bet in soccer betting. For the betting sites favorite team, they need to win by 3 or more goals to win the entire bet. Meanwhile, the underdog team will win half the bet if the loss difference is 2 goals, and win the entire bet if the goal difference is 3. 2....