NFL Players Association medical director Dr. Thom Mayer has concluded that the Eagles followed proper procedure when they allowed quarterback Kevin Kolb and linebacker Stewart Bradley to return to play Sunday after both players sustained hits that would later warrant their removal with a concussion diagnosis. Under league guidelines adopted last year, a player who suffers a concussion should not return to play or practice the same day if a player has a loss of consciousness or "shows signs of confusion as evidenced by disorientation." Mayer requested a copy of the game tape and began a fact-finding probe to determine why Kolb and Bradley were allowed to return to the game in the second quarter, but then determined to have severe enough concussion symptoms at halftime to cause the Eagles to sideline both. "Did the Eagles follow the guidelines? The answer appears to be yes," Mayer told ESPN's Chris Mortensen. "The next question may be even though the current guidelines are a heck of a lot better than they used to be, do we need to re-visit the idea of having an independent neurologist on the sidelines to be absolutely certain?"