The Kansas City Chiefs placed former Tennessee safety Eric Berry was placed on the non-football illness list Monday. Chiefs trainer Rick Burkholder announced, via Terez Paylor of the Kansas City Star, that doctors found a mass in the right side of his chest after complaining of pains following Thursday night’s game against the Oakland Raiders.

Burkholder said that the “leading consideration” for what Berry has is lymphoma. The former all-pro safety released a statement via the Chiefs’ official Twitter page.

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Berry started in all three seasons at Tennessee and was a consensus All-American in 2008 and 2009. The Fairburn, Ga., native was the 2008 SEC Defensive Player of the Year and the 2009 Jim Thorpe Award winner. Berry still holds the record for SEC career interception return yards (494).

Berry is also the older brother of Tennessee freshmen Evan and Elliott Berry.