LONDON — Seattle Seahawks wide receiver Jaron Brown saw teammate David Moore go tumbling over the temporary video advertising boards. At no point was he concerned about his well-being. “Any time you catch a touchdown (pass), I don’t think you’re worried about what happens after,” Brown said. Quarterback Russell Wilson threw touchdown passes to Brown, Moore and Tyler Lockett, and the Seahawks rolled to a 27-3 victory over the Oakland Raiders on Sunday at Wembley Stadium. Chris Carson rushed for 59 yards and rookie Rashaad Penny gained an additional 43 for the Seahawks (3-3), who played to a vociferously supportive crowd — a London-record 84,922 were in attendance — despite the Raiders (1-5) being the designated home team. Oakland quarterback Derek Carr left the game with an apparent left arm injury with 8:52 remaining in the fourth quarter after the last of his six sacks.