This season, 13 NFL teams will have new offensive coordinators (or play-callers). Some big names are taking over new gigs: Norv Turner (now in Minnesota), Scott Linehan (Dallas), Gary Kubiak (Baltimore), Kyle Shanahan (Cleveland), and Hue Jackson (Cincinnati). The NFL track records of these four are readily available just about anywhere you look, and their impact has been examined just about anywhere.

We've done it on numberFire, too.

We've looked at Turner's impact on is familiar with the offense that will exist in Tennessee this year. That implies the offense will be similar to San Diego's from last year. If so, it could be both effective and run-heavy. The Chargers had a pass-to-run ratio of 1.19, 26th in the league.

The Chargers also tied for second in Adjusted NEP per Play (0.15), were second in Adjusted Passing NEP per Play (0.28), and were tied for eighth in Adjusted Rushing NEP per Play (0.03).

6. Frank Reich, who was the San Diego's quarterback coach in 2013, is replacing Whisenhunt as the offensive coordinator in San Diego. Despite being in the NFL as a coach since 2008, he has no history as a coordinator. He has been exclusively a quarterbacks coach and a wide receiver coach since 2009.

7. Reich was the quarterbacks coach for the Colts in 2009 when Jay Gruden is. McVay, though, spent 2011-2013 as the tight end coach in Washington before being promoted after Shanahan's departure. Under McVay, Washington players optimistic, too.

13. As a break from guys without a history as being an offensive coordinator, Joe Lombardi has spent four seasons as an offensive coordinator: a 2002-2005 stint at Mercyhurst College in Erie, Pennsylvania. Most recently, Lombardi has been the quarterbacks coach for New Orleans since 2009. Lombardi has noted that the Lions will operate a bit like the Saints.

14. I'm not saying top 23 running backs off the board this year have been coached by Tedford and achieved at least one 1,000-yard season: Marshawn Lynch and Shane Vereen.

That has some of us intrigued about Doug Martin in a bit of a decreased workload and who could have a bounce-back year in 2014 under Tedford.