The Chargers are preparing for the final game of the regular season against their arch-rival Oakland Raiders in the Bay Area Sunday.  The Chargers are 10-and-5 for the year after their 23-to-10 victory over the Denver Broncos Monday night, their fifth consecutive win.  They have clinched the AFC West championship, but Sunday’s game is still very important.  The Chargers need a win to gain the third seed in the division playoffs next month.  The Raiders are suffering this year with a 4-and-11 record, tying Kansas City for last place in the AFC West.  Game time Sunday is 1:15 p.m.