Eight of the 14 past champions shot 40 percent or better.

Any past champion who is 66 or older would no longer be eligible.

Each year a number of past champions choose not to compete.

Past champions also watched, wondering if history would be made on this day.

It was also the first Tour since 1999 that did not contain a past champion.

Had all past champions made the race, the next fastest car would have been entered into the field.

It is available to any past champion who would not otherwise qualify for the race.

Under the new guidelines, any past champion must be 65 or younger on the first day of the Masters to play.

Past champions were similarly absent from the women's senior race.

The celebrities receive a 30-second head start to begin the race against the professionals and past champions.