Seattle Seahawks cornerback Richard Sherman, appealing his four-game suspension for performance-enhancing drugs, argued that his urine specimen was contaminated while being collected for testing, ESPN reported Sunday.
A verdict is expected later in the week so Sherman is allowed to play Sunday night's key NFC West showdown against the visiting San Francisco 49ers.
Sherman's appeal was heard on Friday. He reportedly claimed that the cup containing his urine was leaking, prompting the collector to place a second cup underneath it to catch the leakage.
He also claimed that the second cup's seal was already broken before it was used. Because of this, the chain of custody was also broken, which nullified Sherman's positive test for Adderall.
Sherman, a starter, was drafted by Seattle in the fifth round of the NFL draft in 2011. He played under 49ers coach Jim Harbaugh at Stanford.