Devon Allen was as close as you could be from getting off to the perfect start in the hurdles Sunday at the World Athletics Championships.

The Philadelphia Eagles wide receiver was disqualified for a false start in the 110-meter hurdles race. Allen had come into the event ranked No. 2 in the world. He reacted too quickly to the sound of the starting gun.

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Devon Allen DQ'd from the World Athletics Championships

Devon Allen, of the United States, leaves the track after getting disqualified in the 110 men's hurdles final at the World Athletics Championships on Sunday, July 17, 2022, in Eugene, Ore. (AP Photo/David J. Phillip)

According to NFL.com, the rules say any reaction time within 0.100 seconds of the sound of the gun is a false start and the NFL player was off by one-thousandth of a second. The decision to disqualify Allen was met with loud boos from the crowds in Eugene, Oregon.

Grant Holloway and Trey Cunningham finished first and second in the event. There was a solid chance Allen would have made the Americans sweep the event. He finished in second in the semifinal with a time of 13.09 seconds.

Devon Allen in a semi-final heat

Devon Allen, of the United States, competes in a semi-final heat in the men's 110-meter hurdles at the World Athletics Championships on Sunday, July 17, 2022, in Eugene, Ore. (AP Photo/Ashley Landis)

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"Track and field is so difficult because you train the whole year for one competition that lasts 12, 13 seconds and that's that," Allen said. "I’ll learn from it, and I’ll make sure I just react not as fast next time."

Allen gets one final week to rest and recover before Eagles training camp begins on July 26.

Allen was an NCAA champion in the 110-meter hurdles in 2014. He was also a three-time U.S. national champion in 2014, 2016 and 2018. He played in 54 football games for the Oregon Ducks between 2014 and 2016. He competed in the 2016 and 2020 Olympics.

Devon Allen embraces Hansle Parchment

Devon Allen, of the United States, embraces Hansle Parchment, of Jamaica, in a semi-final heat in the men's 110-meter hurdles at the World Athletics Championships on Sunday, July 17, 2022, in Eugene, Ore. (AP Photo/Ashley Landis)

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He signed a three-year deal with the Eagles in April.

The Associated Press contributed to this report.