Mar. 9 2:18 PM PT3:18 PM MT4:18 PM CT5:18 PM ET22:18 GMT6:18 AM 北京时间3:18 PM MST5:18 PM EST4:18 PM CT2:18 UAE (+1)17:18 21:18 - A person with knowledge of the deal says the San Diego Chargers have agreed in principle to a four-year contract with kicker Nick Novak. Analysis: Novak made 18 of 20 field goal attempts (90 percent) in 2012, the third-highest conversion rate in team history. He was signed on Sept. 29 after Nate Kaeding hurt his groin in practice two days before a game at Kansas City. Novak also kicked for San Diego in the final 15 games of 2011 after Kaeding was hurt on the season-opening kickoff.