[pac-man]

Total no. of overtime games (1974–2003)

365

Both teams had at least one possession

261 (72 %)

Team won toss and won game

189 (52 %)

Team lost toss and won game

160 (44 %)

Team won toss and drove for winning score

102 (28 %)

Games ending in a tie

15 (5 %)

From: http://www.maa.org/mathland/mathtrek_11_08_04.html

A majority of the time, both teams have at least one possession.