SANTA CLARA, Calif. -- San Francisco 49ers coach Jim Harbaugh completed the Ice Bucket Challenge to fight ALS prior to Friday's practice, as did some local media members.
Harbaugh also challenged President Barack Obama and his predecesor, George W. Bush.
Seattle coach Pete Carroll challenged the three other head coaches in the NFC West -- Arizona's Bruce Arians and St. Louis’ Jeff Fisher accepted. Harbaugh, though, said he was answering the challenge of his brother, Baltimore Ravens coach John Harbaugh.
As for Carroll's challenge, Harbaugh said this: "I've got another challenge with him. I think you know what one that is: The big one."