SAN DIEGO (AP) Keenan Allen really did think about quitting last summer.

The San Diego Chargers' top wide receiver had a rough training camp as a rookie after being selected in the third round out of California. He could do little right, hearing often from coach Mike McCoy - and it was mostly for what Allen wasn't doing.

His mistakes compounded, he didn't play in the season opener and considered ending an NFL career before it really got started.

However, Allen rebounded and compiled one of the most impressive rookie seasons in Chargers history, setting franchise rookie marks in receptions (71) and receiving yards (a team-high 1,046). He led all NFL rookies in catches, yards and touchdown receptions (eight).

Now, Allen is a big cog in the Chargers' offense.

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