William Petersen singing at the cubs 7th Innings stretch July 2016

Billy singing at the 7th Inning stretch at Wrigley Field on July 19th 2016

[@chad9797]

Stud Cantrell...wearing a Cubs hat? NO WAY! The St. Louie Cardinals were his team!

[@AnaMQ1000]

Nice. I knew he had a good voice. Too bad the cameras doesn't show his face properly.

[@johncapozzolo1488]

Ihi it's Amelia again. I seen a picture of this

[@sarawilliams2900]

I don't know William can sing 😂