Adam Vinatieri, Mike Adams highlight Indianapolis Colts' undrafted free agents

Adam Vinatieri has won four Super Bowls in his NFL career. AP Photo/AJ Mast

Undrafted free agents: Mike Adams, S; Quan Bray, WR; Colt Anderson, S; Jack Doyle, TE; Jerrell Freeman, LB; Jonotthan Harrison, C; Zach Kerr, NT; Earl Okine, DE; Matt Overton, LS; Joe Reitz, OL; Erik Swoope, TE; Zurlon Tipton, RB; Adam Vinatieri, K; Griff Whalen, WR; Duron Carter, WR; Tyler Varga, RB; Josh Mitchell, CB; Ben Heenan, OL; Junior Sylvestre, LB; Alex Tanney, QB; John Wetzel, OL; Tay Glover-Wright, CB; Josh McNary, LB; T.Y. McGill, DL; Daniel Adongo, LB.

Starts: Mike Adams (9), Colt Anderson (1), Jerrell Freeman (10), Jonotthan Harrison (5), Joe Reitz (10).

Highlights: There's no better undrafted free agent on the Colts than Vinatieri. The 42-year-old kicker has had a Hall of Fame career. He's made 495 out of the 590 field goals he's attempted in his career, including 17 of the 19 he's attempted this season, and he's showing no signs of slowing down. Adams is the backbone of the Colts' secondary after signing with the team in the middle of June 2014. He made his first Pro Bowl appearance last season and has a team-high five interceptions this season. Harrison is a favorite of general manager Ryan Grigson because of his size -- 6-foot-4 -- and blocking ability. Freeman led the Colts in tackles in his first two seasons in 2012 and 2013 and was second in that category last season.