The Minnesota Vikings made their biggest investment of the off-season in their offensive line. They acquired free agent right guard Will Fries in a 5-year, $88 million deal, free agent center Ryan Kelly in a 2-year, $18 million deal, and spent their first-round draft pick on top left guard prospect Donovan Jackson. Additionally, left tackle Christian Darrisaw looks increasingly likely to return as the starter to begin the season, and Brian O’Neill returns as right tackle.

So what kind of return might the Vikings expect from their investment?

One way to assess the performance of offensive linemen is to look at their Blown Block rate. This stat is compiled by Sports Info Solutions (SIS) and is defined as, “any time a blocker does not successfully block the defender they attempted to engage

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