Browns losing momentum

Posted by ESPN.com’s James Walker

CLEVELAND -- The Browns started well, but the Minnesota Vikings are starting to exert their will in the first half.

Minnesota has stuffed Cleveland's offense after the opening drive and used good field position to score 10 unanswered points. The Vikings lead 10-3 in the second quarter.

Adrian Peterson is getting the football on the ground and through the air, and Cleveland is struggling to bottle him up. Peterson scored on a 1-yard touchdown run at the 11:09 mark of the second quarter.