Seahawks linebacker Lofa Tatupu pleaded guilty today to driving under the influence. He was sentenced to one day in jail and fined $1,255.

Tatupu was arrested on May 10 after he was pulled over for speeding and driving erratically.  A Breathalyzer test later revealed his blood-alcohol level to be nearly twice the legal limit.

Tatupu, who has started every game for the Seahawks since they selected him in the second round of the 2005 draft, signed a six-year, $42 million contract extension in March.