Serena Williams is prepared to go without another victory this year, as long as she mounts a successful title defence at next week's US Tennis Open.
Williams, who took her haul of grand slam crowns to 11 by winning the Australian Open and Wimbledon earlier this year, says she won't be satisfied with two majors in 2009.
Williams has had a mediocre year outside of the grand slams, reaching only one other final.
