Cesar Tordesillas

New England Patriots wide receiver Wes Welker will test the free-agent market to determine his true worth and if he could attract a lucrative long-term deal from other teams.

The 31-year-old Welker is an unrestricted free agent and can officially sign with other teams.

Last year, Welker received the Patriots' franchise tag worth $9.5 million after the team refused to sign him to a long-term deal despite being one of the most productive players in the lineup.

This year, New England didn't issue a franchise tender to any player for the 2013 season before this past Monday's deadline. It was the first time since 2008 that the Patriots opted not to use the tag.

If the Patriots had used the tag on Welker again this offseason, he would be entitled to a 20 percent raise from his 2012 salary, paying him $11.4 million in 2013.

Welker finished last season with a team-high 118 catches and 1,354 yards, along with six touchdowns.

He had a team-high eight catches for 117 yards in New England's 28-13 AFC Championship Game loss to the Baltimore Ravens, but had a drop on a key third down in the second half.

Welker became the first player in NFL history with five 110-catch seasons and has averaged 112 receptions during his six seasons with the Patriots.

Patriots Wide Receiver Wes Welker to Test Free-Agent Market - NFL 2013