During the 2013 season, Matthews' performance was hampered by a serious turf toe injury which caused him to miss all but four games of the regular season. He finished the season with only 14 catches for 138 yards and one touchdown.[12] Matthews was released by the Blue Bombers. In the offseason, he worked at Foot Locker and as a security guard.[4]
Seattle Seahawks
While Matthews was working as a security guard, he received a phone call from a member of the Seattle Seahawks inviting him to try out for them that night.[13] On February 18, 2014, Matthews signed with the Seahawks on a 2014 reserve/future contract.[14] After four preseason games in which he caught four passes for 53 yards, Seattle released him on August 30, 2014. On August 31, 2014, it was announced that he had been signed to their practice squad.[15] He was signed to the Seahawks' 53-man roster on December 6, 2014.[16] He played in three regular season games for the Seahawks in the 2014 season, and did not catch a pass.[4] He recorded a tackle on a special teams play.[17]
In the 2014 NFC Championship Game versus the Green Bay Packers, Matthews recovered a critical onside kick, which gave the Seahawks an opportunity to score and eventually win the game in overtime.[4] In Super Bowl XLIX against the New England Patriots, Matthews caught his first NFL career catch, a 44-yard pass from Russell Wilson. He then caught an 11-yard pass for his first NFL touchdown at the end of the first half, tying the game 14–14.[18] Matthews finished the game with four catches for 109 yards, tied with the Patriots' Julian Edelman as the game's leading receiver, but the Patriots defeated the Seahawks 28–24.[19] For his performance he received consideration for Super Bowl MVP honors which was ultimately won by Patriots quarterback Tom Brady.[20] During the game, the value of Matthews's rookie card reportedly soared by 3,500%.[21]
On November 17, 2015, the Seahawks released Matthews.[22] Seattle had given him the option of returning to the practice squad, but Matthews declined saying “I felt like I was too far ahead for that. I didn’t want to go back to that life.”[20]
Baltimore Ravens
After being released by the Seahawks, Matthews was signed to the Baltimore Ravens practice squad on November 23, 2015.[23] He was promoted to the active roster on December 12, 2015.[24] He scored his only NFL career regular season touchdown on December 27, 2015, against the Pittsburgh Steelers.[25] On April 7, 2016, Matthews signed his exclusive rights free agent tender to remain with the Ravens.[26] On September 3, 2016, he was placed on injured reserve.[27]
On September 2, 2017, Matthews was released by the Ravens, but was re-signed two days later.[28][29] He was released again on November 3, 2017.[30]
According to Sports Illustrated, Matthews was a "heartwarming story, a guy who’d gone from hiding in plain sight to the cusp of Super Bowl history to the unemployment line, in less than a calendar year".[20]
Calgary Stampeders
On October 2, 2018, Matthews returned to the CFL when he signed with the Calgary Stampeders.[31] With the Calgary Stampeders winning the Grey Cup, Matthews became a crucial pickup making 12 receptions for 252 yards in four remaining regular season games.[32] In two playoff games, Matthews contributed seven catches for 98 yards en route to winning the Grey Cup.[33][34]
Winnipeg Blue Bombers (second stint)
On May 10, 2019, the Blue Bombers announced they had signed Matthews to a three-year contract.[35] He played in six games for the team, recording 12 receptions for 180 yards and a touchdown before being released on August 28, 2019.[36]
Montreal Alouettes
Two days after being released by Winnipeg, Matthews signed with the Montreal Alouettes.[37] Matthews played in five games in the second half of the season, and helped Montreal secure its first playoff berth since 2015, by catching nine passes for 139 yards and three touchdowns.[38]