TBS has ordered a second season of “Sullivan & Son.”Cabler has ordered 10 episodes and the season is set to debut next year. Sitcom launched July 19 and is ending its first season next week. In its most recent episode, “Sullivan” drew 2 million viewers and just under a million in the 18-49 demo. Show, about at attorney who leaves his Manhattan practice and takes over his parents bar in Pittsburgh, stars Steve Byrne, Christine Ebersole and Brian Doyle-Murray. Exec producers are Vince Vaughn, Peter Billingsley and showrunner Rob Long. Show is produced by Warner Horizon Television. TBS has fared well this year with repeats of “The Big Bang Theory,” and original laffer “Men at Work,” which was also ordered a sophomore season.