We're not even one-third of the way through the season, yet that is more than enough time to conclude that it is pure folly for league commissioner Roger Goodell to propose extending the regular season.

Redskins quarterback Robert Griffin III and Chiefs quarterback Matt Cassel suffered concussions last Sunday. Texans linebacker Brian Cushing suffered a season-ending knee injury Monday.

Heck, the Raiders were without their two starting cornerbacks before their second game ended and lost their most explosive wide receiver, Jacoby Ford, before the season started.

"The human body can take only so much," Raiders defensive back Michael Huff said. "Playing 18 games would just lead to a watered-down product."

Goodell said he is open to reducing the number of exhibitions from four to two. In turn, he is open to the idea of tacking on the two more regular-season games.

The thinking is, players still would play the same number of games. Nonsense, Huff said.

Front-line players typically don't play much in the first exhibition and they don't play at all in the exhibition finale.

ESPN injury analyst Stephania Bell said the increased size and speed of today's players no doubt play a role in so many getting injured.

"It would stand to reason that more mass moving at a faster rate leads to greater forces upon contact," said Bell, who grew up in Palo Alto and Mountain View.

What isn't known for sure, Bell said, is whether players are getting injured more often now and, if so, why.

Players are believed to be in better shape, given the advancements in training and the implementation of year-round regimens. Yet, the injuries persist.

  • If one didn't know better, it might seem as if almost every team has a Liz Frank on its roster.

    Such is the prevalence of the once-unheard-of foot injury now commonly known as the Lisfranc.

    The injury, a fracture and dislocation of the joint between the forefoot and midfoot, ended the seasons of Raiders running back Darren McFadden and Houston quarterback Matt Schaub last year.

    This season, the Raiders lost Ford to the Lisfranc injury, as did the Green Bay Packers with running back Cedric Benson.

    Bell said discussions she has had with other medical experts point to the injury being more commonplace for unknown reasons. The penchant for being more specific in naming injuries probably plays a part in the injury seeming more common, she added.

  • Where Ryan Mundy goes, helmet-to-helmet hits flow. At some point, the league has to take a hard look at Mundy's seemingly reckless style of play.

    The Steelers safety knocked out Raiders wide receiver Darrius Heyward-Bey with a vicious hit Sept. 23, causing a concussion and neck strain. Later in the game, he delivered a legal hit that concussed tight end Brandon Myers.

    On it goes. Mundy got flagged for a helmet-to-helmet hit on Eagles receiver Jeremy Maclin last Sunday. Against the Raiders in 2009, Mundy hit a defenseless Johnnie Lee Higgins on a play that resulted in a penalty.

  • Ever wonder why the Cleveland Browns are the Cleveland Browns? Watch NFL Network's "Cleveland '95: A Football Life," and you'll get an idea why.

    That team went to the playoffs in 1994 and seemed to be on the verge of building something under little-known coach Bill Belichick.

    In a matter of weeks, owner Art Modell decided to move the franchise to Baltimore and fired Belichick. We all know what Belichick has done since taking over the New England Patriots.

    Modell also broke up a staff of coaches who, in most cases, went on to find huge success elsewhere.

    Check out whom Belichick had on his staff: Nick Saban (won NCAA titles with LSU and Alabama), Jim Schwartz (Lions coach), Scott Pioli (helped Belichick build the Pats dynasty, now the Chiefs general manager), Eric Mangini (coached Browns and Jets), Kirk Ferentz (Iowa coach), Chuck Bresnahan (former Bengals, Raiders defensive coordinator), Rick Venturi (former Saints, Rams coach), Jim Bates (former Dolphins, Broncos, Buccaneers coach), Thomas Dimitroff (Falcons general manager), Pat Hill (former Fresno State coach, current Falcons offensive-line coach) and Mike Lombardi (former Raiders pro personnel employee).

  • The four NFC West teams are 10-0 combined at home, the first time in league history that a division went unbeaten/untied at home through the first five weeks.