Quarterback Chandler Rogers never got much of a chance at Cal after losing a preseason competition with Fernando Mendoza for the starting job. But he's getting an opportunity in the United Football League and he's making the most of it. Rogers was one of four former Cal players who played in UFL games this weekend, and three of the four played on teams that won their games and improved their chances to reach the playoffs. Xavier Carlton is Rogers' teammate for a Louisville Kings team that upset the first-place DC Defenders 30-13. Ricky Correia helped the Birmingham Stallions knock off the Dallas Renegades 21-17 in overtime, and Ryan Coe scored a couple of points, but his Columbus Aviators lost to the St. Louis Battlehawks 31-20. However, Rogers was the star of the weekend, completing 17-of-26 passes for 201yards and two touchdowns with no interceptions while leading the Louisville Kings to an impressive upset of DC and improving the Kings' record to 3-4.…