5:58 PM ET

Jack Campbell's grandfather died in Nashville, where he had traveled to watch the Hawkeyes play.

The school said that William Smith Jr., the father of Campbell's stepmother, died in a traffic accident. The 76-year-old died after being taken to the hospital.

Campbell's parents didn't tell him about the accident until after Iowa beat Kentucky on Saturday. Campbell had a team-high 10 tackles in his final college game.

"Our hearts are with Jack and his entire family as they grieve the tragic death of their grandfather and father, William Smith, Jr.," the coach said. Mr. Smith's influence on his grandson was strong. The Campbell family will be kept in our thoughts and prayers.

Campbell was the Big Ten's defensive player of the year and a finalist for the Butkus Award.