Detroit Lions guard Halapoulivaati Vaitai (72) looks on from the sidelines against the Pittsburgh Steelers during overtime at Heinz Field. Charles LeClaire-USA TODAY Sports

Halapoulivaati Vaitai‘s third Lions season will not begin on time. The veteran offensive lineman is now on Detroit’s IR, mandating a four-game absence. The nature of Vaitai’s injury is unknown.

The well-paid blocker is expected to return as the Lions’ right guard starter, but the team will need to make other plans for its September slate. This will be Vaitai’s second IR trip since he signed with the Lions in 2020. The team also claimed guard Drew Forbes off waivers from the Browns on Monday.

The former Eagles draftee missed six games in 2020 due to a foot injury but returned to play in 15 last year. Vaitai represents part of the Lions' source of optimism; both he and left guard Jonah Jackson ranked as top-30 guards (per Pro Football Focus) in 2021. Along with former first-rounders Taylor Decker, Frank Ragnow and Penei Sewell, the Lions are expected to field one of the league’s top O-lines.

Detroit’s fill-ins from 2020 are no longer on the roster, though Forbes is now in the mix. The team now has four backup interior o-linemen — a group that also includes 2020 fourth-rounder Logan Stenberg, fifth-year veteran Evan Brown and 2021 UDFA Tommy Kraemer. Brown served as Ragnow’s primary backup last season, and Kraemer made three starts in 2021. Neither Forbes nor Stenberg has started a regular-season game.

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