With time running short to keep the NFL's preseason intact, owners and players got into another long round of labor talks Thursday. The NFL lockout has stretched to four months. NFL commissioner Roger Goodell and eight of the 10 members of the owners' labor committee were present, including Jerry Jones of the Cowboys and John Mara of the Giants. Two new participants Thursday were Packers CEO Mark Murphy and Chargers owner Dean Spanos. NFL Players Association chief DeMaurice Smith and a half-dozen current or former players also were there, including Colts center Jeff Saturday, Ravens defensive back Domonique Foxworth, and Giants defensive end Osi Umenyiora. Umenyiora is one of 10 player plaintiffs in a federal antitrust lawsuit against the league.