One could argue that the Detroit Lions have the best offensive line in the NFL. Anchored by veteran center Frank Ragnow, the offensive front also features talented tackles Taylor Decker and Penei Sewell. However, heading into NFL Free Agency, the guard spot is in flux.

Who will be the starters at offensive guard for the Detroit Lions next season?

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Detroit Lions Have Questions at Offensive Guard

The top three Detroit Lions offensive guards on the roster, Jonah Jackson, Graham Glasgow and Halapoulivaati Vaitai, are all unsigned and headed toward free agency. The starters, Jackson at left guard and Glasgow at right, seem more likely to come back than Vaitai, but it wouldn't be shocking to see only one of the three return. Jackson is the best player, but Glasgow is a hybrid guard/center who could rotate to center if Ragnow ever misses time. It makes sense for Detroit to bring both of them back, but if they can't, they could scour the free agent market or find mid-to-late round value at the position in the draft.

A player I like is Dominick Puni, a 6-5, 320-pound mauler from Kansas who appears to fit the mold of this team as a gritty, hard-nosed player. The fifth-ranked guard in this year's NFL Draft could plug in right away at left guard and should be available at the end of the third round or possibly even the fourth if the Lions can trade back and still get him.

The Detroit Lions' offense has been so solid in recent seasons under Dan Campbell. Everything they can and want to do begins with the running game. With the Chicago Bears improving their defense and the Green Bay Packers changing to a 4-3 scheme, the Lions must be solid on the offensive line in order to repeat as NFC North Champs.