Singletary recreates the 46 defense.
NFL Nation looks ahead to Friday for Carolina and Denver, including both teams being at full strength for the first time in several weeks.
Recapping Thursday's top stories, which include the release of the police report involving the incident between the Browns QB and his ex-girlfriend last Saturday.
Investigators working for Peyton Manning visited the source of a report that he and other star athletes had obtained PEDs before the documentary aired late last year, The Washington Post reports.
The Oakland Raiders and Jacksonville Jaguars are the only two NFL teams below the 89 percent cash spending required by next year, and they are significantly under the minimum, the players' union
Carolina Panthers team owner Jerry Richardson attended Thursday's practice, his first of Super Bowl week.