Feb. 20 (AP) -- First day for clubs to designate franchise or transition players.
Feb. 27-March 5 - NFL combine in Indianapolis.
March 6 - Deadline for clubs to designate franchise or transition players.
March 14 - 2018 league calendar begins, free agency opens, trades allowed.
March 25-28 - Annual league meeting, Orlando.
April 2 - Clubs that hired a new head coach after the end of the 2017 regular season may begin offseason workouts.
April 16 - Clubs with returning head coaches may begin offseason workout programs.
April 20 - Deadline for restricted free agents to sign offer sheets.
April 26-28 - NFL draft, Arlington, Texas.
May 21-23 Spring league meeting, Atlanta.