Time of possession

The amount of time one team has the ball in its possession relative to the other team. Since there are 60 minutes in a non-overtime game, and one team or another always has possession of the ball, the two teams divide up the time with which they have the ball out of the 60 minutes. If one team has it 40 minutes the other will have it 20 and so forth. A time of possession advantage is seen as a positive thing and is highly correlative with a win or loss. Teams that dominate time of possession usually have good defenses (that can keep the opposing team’s offense from mounting many long drives) and solid offenses (usually with good running games as running plays keep the clock running more often than passing plays).