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If any team is going to have success in the NFL, then it has to have a successful offensive line. The San Diego Chargers have had a talented corps of linemen and there is no better example than pro-bowl guard Kris Dielman.
Dielman has played his entire career with the Chargers and has been a force for a long time. However, the Chargers' game against the Jets lead to his concussion which further led to a season-ending seizure. Dielman has stated that he will consider retiring this offseason. If he does, it will prove to be a devastating loss to the O-line.
Left tackle Marcus McNeill had a spinal injury this year which put him on the IR. If he does return, it has been speculated that the Chargers may try to trade him if he passes his physical.
Nick Hardwick has recently reported that he may consider retirement, looking at his colleagues and other NFL Alum.
The Chargers will have very little success if the woes at the line continue.