In NHL betting, when a “T” precedes the number it references that the number following it is the predicted total for the two teams. So, bettors wager on whether or not they think the total will go over or under this number. In other words, they place a total or over/under bet. For instance, a “T:6.0” means that if you bet under, the maximum number of points in the entire game can’t exceed 6.