Los Angeles Chargers guard Zion Johnson (77) during rookie minicamp at the Hoag Performance Center. Kirby Lee-USA TODAY Sports

Nearly every first-round pick this year has come to terms on his four-year agreement (feat. the fifth-year option). The Chargers became the latest team to lock down their top draftee, signing Zion Johnson on Friday.

A standout guard from Boston College, Johnson was the second interior offensive lineman off the board this year — following only Texas A&M’s Kenyon Green, who went 13th overall to the Texans. This year’s No. 17 overall pick will be expected to play immediately for a Chargers team that loaded up on filling needs this offseason.

Johnson transferred to Boston College after spending two years at Davidson. He blocked for four 1,000-yard rushers while in college, most notably A.J. Dillon‘s 1,645-yard season in 2019. Boston College stationed Johnson at left tackle during the 2020 season, and he earned first-team All-American honors at guard last year, joining Green and fellow first-round O-linemen Ikem Ekwonu and Tyler Linderbaum on the Associated Press’ top team.

The 6-foot-2 blocker should be ticketed to be the Bolts’ right guard starter in Week 1. The team has its left side of the O-line addressed, with 2021 first-round pick Rashawn Slater thriving as a rookie alongside free-agent pickup Matt Feiler, and Corey Linsley has the center post locked down. Los Angeles will likely still search for a right tackle, its weakest O-line spot last season, but Johnson fills a key need for what is expected to be a rising AFC contender.

All but five first-round picks have signed their rookie contracts. Only Linderbaum, fellow Ravens pick Kyle Hamilton, Patriots guard Cole Strange and Seahawks tackle Charles Cross remain unsigned.

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