Andy Roddick is willing to pay his dues.

Roddick, one of several tennis stars who complained loudly about playing conditions during the rain-soaked United States Open recently, traveled to Beijing on Thursday to participate in the China Open and perhaps to persuade his peers to form a labor union.

“Now that the tennis world is reconvening in Asia over the next couple of weeks, we’ll see what the thoughts are of some of the top players in our sport,” Roddick said Wednesday in a telephone interview from his home in Austin, Tex., where he trains.

“Tennis is a star-driven sport, and if we are going to be unified, all of our stars have to be on the same page,” said Roddick, a former No. 1-ranked player and the United States Open champion in 2003. He added: “Without a union, it’s tough for us to complain about anything. If we don’t unite, we have no one to blame but ourselves.”