VIDEO : Brad Pitt Brings Son Knox, 7, to the 2015 British Motorcycle Grand Prix

Sunday was a father-son fun day for Brad Pitt and his and wife Angelina Jolie 's 7-year-old son, Knox! The two attended the 2015 British motorcycle Grand Prix, aka the MotoGP World Championship, at Silverstone in Northampton, England. Pitt and Knox then met with winner and Italian racer Valentino Rossi and posed for group photos. The event took place days before the release of Pitt's new documentary Hitting The Apex . The two, who wed almost exactly one year ago , are also parents to sons Maddox, 14, and Pax, 11, and daughters Zahara , 10, and Shiloh , 9.