NFL

Seattle Sea hawks is running back Shaun Alexander set the NFL single-season record for touchdowns at January the 1st .

The NFL announcer that the NFL Network would begin airing a "Road To The Playoffs" package of eight prime time regular season NFL games starting in 2006 , January 28

January 28.

The Pittsburgh Steelers won their fifth Super Bowl , defeating the Seattle Sea hawks 21-10 in Super Bowl XL (11) at Ford Field in Detroit, Michigan. The game was witnessed by 141.1 million viewers at the Ford Field , making it the second-most watched program in U.S television history, at February 3.

February 3:

The NFL clubs approved an extension of the Collective Bargaining Agreement through 2012. Owners also agreed on an expanded revenue sharing program that will redistribute $850 to $900 million over the course of the deal that was in the month March 8.

March 8 :

Commissioner Tagliabue announced his decision to retire by the end of July. The NFL enjoyed an era of unrivaled in the Tagliabue Era, including peace throughout his 17-year tenure .  

March 20 :

The NFL set an all-time paid attendance record in 2005 for the fourth consecutive season. Attendance for all 2005 games was 21,792,096, an increase of nearly 84,000 over the previous record of 21,708,624 in 2004.

March 27 :

NFL clubs unanimously decided to return the name of the official game ball to "The Duke" in honor of the late New York Giants owner Wellington Mara at  March 27.