New run game coordinator Rick Dennison will have to make the line better than its talent

Less than a week into free agency, the Vikings' philosophy for 2019 has taken shape. Namely: They're going to go with (and pay) the guys with whom they've had success in the past.

That means, at least at this point, giving defensive-minded head coach Mike Zimmer as many familiar defensive resources as the salary-cap challenged franchise can afford. Re-signing linebacker Anthony Barr and restructuring Everson Griffen's deal were the biggest moves in that regard.

It also means any attempted upgrades to the offense — specifically the offensive line — figure to be far from splashy. The Vikings find themselves with plenty of offensive line needs but limited cap space in an offseason when a lot of linemen are getting paid.

That combination will leave the Vikings hoping to improve a major 2018 weakness — Pro Football Focus (PFF) graded the Vikings' line 29th out of 32 teams — via the draft, lower-level signings and, perhaps most important, internal improvement brought about by new offensive coaches.

It's not an awful strategy — there's no cap on what you can pay coaches, so you might as well aim big — which is good because it's the only path the Vikings really have at their disposal.

Even in-house free agent candidates for return at guard such as Nick Easton and Tom Compton already have departed for the Saints and Jets, respectively.

While they certainly will give new offensive line coach Rick Dennison more than the one player on the roster who has played guard in the NFL (Danny Isidora) by the time the regular season starts, it is notable to consider how much is presumably being expected of the veteran coach.

On Dennison's ledger, here are two positives: The Bills in 2016 had the No. 11-rated offensive line per PFF. Dennison arrived in Buffalo for one season as offensive coordinator in 2017 and the unit improved four spots to No. 7 overall in PFF's rankings.

He went to the Jets in 2018 as the offensive line coach/run game coordinator — the same title he now holds with the Vikings — and took PFF's 30th-ranked offensive line from the previous year and improved it to the No. 25 ranking.

Neither of those examples were huge leaps, but progress is progress. Similarly, the Vikings in 2017 benefited from the hiring of Tony Sparano in improving from a No. 29 ranking in 2016 to No. 22 in 2017. His tragic death before the 2018 season had a major impact.

Vikings fans might say the difference between the line play in those years seemed to be even greater than a seven-spot swing would indicate.

That said, the Vikings also invested that year in two new tackles in 2017 (Riley Reiff and Mike Remmers) as well as using a third-round pick on center Pat Elflein. The Vikings would have to get pretty creative with their cap to fit in a contract similar to the one Reiff signed two years ago (five years, $58.75 million, including $26.3 million guaranteed).