The Indianapolis Colts suspended receiver-punt returner Isaiah McKenzie and cornerback Tony Brown for the final three regular-season games because of conduct detrimental to the team. Suspensions handed down by teams to individual players are rare in the NFL. Typically, player punishments are handled by the league’s head office. Suspensions are usually tied violations of the league’s personal conduct policy or for breaching player-safety rules. The Colts did not provide specifics about what occurred as they made the announcement on Tuesday.