With Iowa State beating Iowa in the Cy-Hawk Series on Saturday, Brock Purdy had George Kittle pay up on a bet. Here's how he ...

With the Cyclones holding off the Hawkeyes for a 20-19 win on Saturday, George Kittle had to pay off his bet with 49ers QB ...

Big days from Breece Hall and Will McDonald IV headlined former Iowa State football players in the NFL Week 2.

Former Iowa State quarterback Brock Purdy, now the franchise quarterback with the San Francisco 49ers, showed his undying ...

Brock Purdy is still Iowa State football's No. 1 fan. Watch the San Francisco 49ers QB celebrate the Cyclones' win over Iowa ...

Purdy will face fellow Iowa State alums Breece Hall, Will McDonald IV and Allen Lazard in the 49ers' season opener against ...

George Kittle is a beloved figure for Iowa Hawkeyes fans, having carved out an illustrious career with the San Francisco ...

After 49ers practice on Wednesday in Santa Clara, Calif., Kittle showed up to his media availability in the locker room ...

San Francisco 49ers QB Brock Purdy had a priceless reaction to his Iowa State Cyclones beating the Iowa Hawkeyes on a last ...

San Francisco 49ers tight end George Kittle paid a steep price after his alma mater lost to Iowa State in their annual ...

Of course, we're referring to 49ers' star quarterback Brock Purdy, who played college football for the arch-rival Iowa State Cyclones. The two teammates had some fun with each other over the weekend.

Brock Purdy and George Kittles's alma maters have one of the more fun crosstown rivalries in college football. The former ...