Zettel announced his retirement from football Friday, Nick Wagoner of ESPN.com reports.

EDGE Analysis

Zettel signed with the 49ers in late July but will hang up his cleats after going through the early portion of training camp. The 29-year-old appeared in 50 games across five seasons and totaled 76 tackles and 7.5 sacks.

Zettel agreed Wednesday with the 49ers on a one-year contract, Cam Inman of the San Jose Mercury News reports.

EDGE Analysis

San Francisco will bring in Zettel to shore up its depth on the defensive line with multiple players in the position group battling injuries early in camp. Zettel will be a long shot to make the 49ers' roster coming out of the preseason.

Minnesota cut Zettel on Wednesday.

EDGE Analysis

Zettel wasn't able to translate his opportunity with the Vikings into a depth defensive end role. The 28-year-old will look to latch on in such a capacity elsewhere in the league.

Zettel agreed to terms Wednesday on a contract with the Vikings, Courtney Cronin of ESPN.com reports.

EDGE Analysis

Zettel appeared in four games with the Bengals and one game with the 49ers last season, notching six tackles (three solo). The 27-year-old now stands to spend the summer competing for a depth role along the Vikings' defensive line.

Zettel signed a contract with the 49ers on Monday.

EDGE Analysis

Zettel was let go by Cincinnati last week and will now receive a fresh start in San Francisco. The 27-year-old was on-and-off the Bengals' roster throughout the season and ended up totaling five tackles (three solo) in four games.

Zettel was waived by the Bengals on Tuesday.

EDGE Analysis

Zettel has been up and down with the Bengals this year and has appeared in four games. He was replaced on the roster by Brady Sheldon.

Zettel signed a contract with the Bengals on Wednesday, Geoff Hobson of the Bengals' official site reports.

EDGE Analysis

Zettel was cut by Cincinnati on Monday, and he now rejoins the team following the decision to waive Damion Willis. The fourth-year pro has appeared in only one game for the Bengals this season, Week 7 versus Jacksonville, during which he played a rotational role on defense but didn't record a tackle.

The Bengals cut Zettel on Monday, Ben Baby of ESPN.com reports.

EDGE Analysis

Zettel was signed last week and will be let go after just one contest. He played 31 of a possible 82 defensive snaps (38 percent), but he didn't record a tackle. His departure may signal Carlos Dunlap (knee) and/or Carl Lawson (hamstring) are near a return to action.

Zettel signed a contract with the Bengals on Thursday.

EDGE Analysis

Zettel spent the offseason in Cleveland, but he was waived by the team during roster cuts. The fourth-year pro projects to bolster Cincinnati's depth at defensive end, though he offers little (if any) upside in IDP formats.

Zettel was claimed by the Browns on Thursday.

EDGE Analysis

Zettel, who was waived by Detroit despite a 2017 season in which he led the team with 31 quarterback hurries, finds a home in Cleveland. The 2016 sixth-rounder will likely serve as a reserve option in the Browns' deep defensive end group.