Quentin Jammer, the veteran leader of the Chargers� secondary, has quietly become one of the NFL�s top shutdown cornerbacks. While his play doesn�t always make the highlight reels, Jammer is as solid as they come and week-in and week-out he is called upon to go toe-to-toe with the NFL�s best receivers. TRANSACTION HISTORY: First-round draft pick (5) by San Diego, April 20, 2002 signed six-year contract with Chargers Sept. 10, 2002.