Is Braydon Coburn Being Underappreciated by Philadelphia?

The Philadelphia Flyers have a terrible defense—that much is certain. But Braydon Coburn is surely not part of the reason for the blue line's ineptitude.
Want the short answer to this headline's question? Yes, he is being (and has been) extremely underappreciated by Philadelphia.
I can't tell you how many times I have been at a game and heard fans complaining about Coburn or how many comments I have read here at B/R that criticize Coburn's game.
My argument is not that Coburn is an elite player or anything of the sort. He isn't an All-Star, and he certainly won't win any league-wide awards. But he is the closest thing the Flyers have to a No. 1 defenseman right now, and he's been a stalwart on the blue line for years.
We can get caught up in arguments about his playing style, physical skills and all of that, but those are completely subjective discussions that will never really have any meaningful conclusions.
So let's just get down to it and see what the numbers tell us.
The first thing to look at is just how valuable Coburn is from a durability standpoint. Before his injury this year, he had only missed an incredible eight games going back to 2007 (not including the lockout-shortened 2013 season).
Coburn has also led the team in minutes played in each of the past two seasons, and he's led all Philadelphia defensemen in shorthanded time per game in each of the past three seasons.
His ability to eat up tough minutes and play on a nightly basis has certainly been overlooked. Amount of time on the ice aside, however, there are also a lot of positive but subtle contributions that Coburn makes which often go unnoticed or unrecognized.
People complain that he is bad with the puck and turns it over far too often. But this season, according to SportingCharts.com, Coburn averages just 0.45 turnovers per game, which is better than that of Mark Streit (0.52).
Coburn also has a better giveaway-takeaway ratio than Streit, Nicklas Grossmann, Nick Schultz, and Luke Schenn.
Looking at possession numbers, Coburn stands out as a very good and heavily relied-on defensive player who is also able to create offense and get the puck up the ice efficiently. The following information all comes from the charts here (courtesy of somekindofninja.com, which uses information from BehindTheNet.ca).
He started the second-most faceoffs in the defensive zone among Philadelphia defensemen in 2013-14 and played against the second-best competition, yet he still had a positive relative Corsi of 1.6, meaning the Flyers created more shots than they gave up while he was on the ice.
In 2014-15, it's more of the same. While the quality of competition is more evenly spread out amongst Flyers defensemen this year, Coburn starts the least faceoffs in the offensive zone (43.5 percent) and still has a solid relative Corsi of -0.7—better than Andrew MacDonald (-0.8), who starts 52.6 percent of his faceoffs in the offensive zone.
Coburn's relative Corsi is also far better than that of Schultz (-3.8) and Grossmann (-13.8).
It's clear that Coburn is an extremely reliable player in this facet, especially compared to the putrid teammates he has to deal with.
For those who still aren't convinced, there's even more evidence proving Coburn's defensive skills. This great work (chart below) by Pattison Ave shows how good Coburn is at disrupting opponents who attack his side of the ice while gaining the blue line.
Credit: Pattison Ave
This is certainly a lot of data, but it all comes together to prove one thing: Braydon Coburn is an extremely solid defenseman who does (and has been doing) a lot of valuable things for Philadelphia.
He's the only current Flyer capable of holding up under the pressure of playing big defensive minutes and still contributing positively at the other end of the ice.
So hey, Philadelphia: Stop blaming Coburn. This team has a lot of problems, but he is definitely not one of them.