The star wide receiver instead had to pass the time introducing his new quarterback to his kids.MORE: Recapping ‘Hark Knocks’ Episode 1Gazing out at the field, Brown’s young son couldn’t spot a familiar face, and turned to his dad to ask, “Where’s Roethlisberger?””Where’s Roethlisberger?”@AB84 had to inform his kids of his new QB.📹: @HBO | #HardKnocks pic.twitter.com/Ci4WqXeDYg— Sporting News (@sportingnews) August 6, 2019″He plays for the Steelers. Our quarterback’s Derek now. We don’t play with Roethlisberger no more,” Brown explained to his bemused son. “We play with the Raiders. We play with Derek Carr. That’s my quarterback.” Brown spent the first nine years of his career playing with Ben Roethlisberger, to the tune of 11,207 receiving yards and 74 touchdowns.Time will tell if the Brown-Carr connection in Oakland will be that prolific. Antonio Brown traded in black and yellow for silver and black this offseason, but his kids haven’t quite figured out his new team’s quarterback situation.Brown was largely restricted to watching practice in the opening episode of “Hard Knocks,” sidelined by a mysterious foot injury at Raiders training camp.