The NFL has had 325 overtime games since the rule was adopted in 1974. The results:
Both teams have had possession 235 times (72.3%).
The team that has won the toss has won 169 times (52.0%).
The team that has lost the toss has won 141 times (43.4%).
223 games were decided by a field goal (68.6%).
86 games were decided by a TD (26.5%).
One game was decided by a safety (0.3%).
There have been 15 ties (4.6%).
It seems fair but these numbers are somewhat misleading because in 1994 a rule changed moved the kickoff back 5 yards to the 30 yard line (those numbers were based on data from 1973-2003). Since then, it's been about 60%. Prior to the rule change, the coin toss had no predictive value for deciding who would eventually win the game. Since 1994, the coin flip winner has a clear advantage.
TL;DR There is a fairly significant statistical advantage for the team that wins the toss. More than 25% of teams that lost the coin toss never touched the ball. Since 1994, the team that won the overtime coin toss won the game 34.4 percent of the time on the first possession and have won about 60% of the time total.
Den lär vara jämnare nu då det inte räcker med FG på första drivern att avgöra direkt.
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