Countdown for NFL’s greatest moment down to final 4

The countdown for the NFL’s greatest moment is down to the final four.

As part of its celebration of the 100th season, the league is conducting balloting for its most iconic moment at NFL.com/greatestmoment and is encouraging fans to vote for each of the nominations.

The voting started with 32 moments (one for each team) and has been whittled down each week.

The final four contenders are:

Franco Harris’ “ Immaculate Reception, ” David Tyree’s “ Helmet Catch,” the 1972 Dolphins’ perfect season and Dwight Clark’s “ The Catch.”

From these four, fans will choose the No. 1 overall moment in voting from Thursday until noon on Super Bowl Sunday, Feb. 2.

Video clips and text describing each moment will be available when fans vote. The winner will be announced during the Super Bowl pregame show on Fox.