EUGENE, Ore. -- Olympian and receiver Devon Allen has suffered a second anterior cruciate ligament knee injury in three seasons and will miss the rest of Oregon's football season, a source confirmed to The Oregonian/OregonLive.

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DuckTerritory.com first reported the season-ending injury.

Allen pulled up while covering a punt Saturday against Nebraska and the non-contact injury was feared as an ACL tear after he immediately held his left knee on the turf.

It is the second season-ending knee injury suffered by Allen while playing on special teams. He suffered ligament damage in his right knee during the 2015 Rose Bowl while returning the opening kickoff.

Allen missed the 2015 track and field season because of the injury but returned to win his second U.S. outdoor title in the 110-meter hurdles in July, at the Olympic Track & Field Trials at Hayward Field, and lowered his UO school record in the process. His victory was one of the meet's signature moments, as he celebrated by jumping into the grandstands to meet his family.

Allen returned for his junior season of football at Oregon less than a week after finishing fifth in the 110-meter hurdles final at the Rio de Janeiro Olympics. He caught four passes for 141 yards and a touchdown this season in three games.

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Since returning from Rio, Allen has weighed whether to forgo his remaining track and field eligibility and turn professional, but he remained steadfast he wanted to also make a run at playing professional football beyond his Oregon career.

It is unclear yet whether Allen will continue to play football after this latest reported injury.

This article was written by Andrew Greif from The Oregonian and was legally licensed through the NewsCred publisher network.