One day after the San Francisco 49ers beat the Cowboys, 42-10, Kittle revealed he was wearing a "F*** Dallas" t-shirt under his uniform in birthday post on Instagram.

San Francisco 49ers head coach has offered his response to the T-shirt worn by George Kittle in the NFL which has led to an escalating feud with the Dallas Cowboys.

H.E.R. Posts Sweet Throwback Singing the National Anthem for the 49ers When She Was 11 Years Old. The star made a surprise appearance during Usher's Halftime Show performance on Sunday (Feb. 11).

Although the 49ers couldn't switch jerseys for the white combination, they are being allowed to wear their throwback uniforms on Sunday, which feature white pants. Sunday threads ?