CAN'T BE CLOSER: Allyson Felix (top) and Jeneba Tarmoh couldn't be separated on the women's 100m finish line at the US track and field Olympic qualifying meet.

A coin toss could decide the Olympic fate of two American sprinters after they finished in a dead-heat for the final qualifying spot for the London Games.

Allyson Felix and Jeneba Tarmoh finished in a dead heat for the last US spot in the 100m to London, each leaning across the finish line in 11.068 seconds. One of them will join Carmelita Jeter and Tianna Madison, who are already on the team.

USA Track and Field announced how the third-place tie between the training partners will be decided. The scenarios involve either a coin toss or a run-off to determine the third and final spot on the team for the London Games.

If both athletes choose the same option, it will determine the tiebreaker. If the athletes disagree, the tiebreaker will be a run-off. If both athletes decline a preference, the tiebreaker will be a coin toss.

The coach for both sprinters told The Associated Press they won't make any kind of decision until after they complete the 200 later this week. The final is Saturday.