Serena unapologetic at sour end to Open

WORLD No2 Serena Williams has vowed to learn from the on-court clash with a lineswoman that snuffed out her hopes of defending the US Open title.<br />Williams crashed out at the semi-final stage on Saturday night when she was given a point penalty for launching a tirade at the official. <br /><br />The sanction came as the American served to stay in the match, and instantly handed Belgium&rsquo;s Kim Clijsters a 6-4, 7-5 victory at Flushing Meadows.<br />Three-time champion Williams was unrepentant at her part in the confrontation after the controversy, but insisted she would use the experience to her advantage.<br /><br />&ldquo;I think that I&rsquo;ll learn that it pays to always play your best and always be your best and always act your best no matter what,&rdquo; said the 27-year-old. <br />&ldquo;And I think that I&rsquo;m young and I feel like in life everyone has to have experience that they take and that they learn from. I like to learn from the past, live in the present, and not make the same mistakes in the future.&rdquo;<br /><br />Wimbledon champion Williams dismissed suggestions she should have apologised to the official, at whom she gesticulated with her racket.<br /><br />&ldquo;An apology for?&rdquo; she said. &ldquo;From me? How many people yell at linespeople? Players, athletes get frustrated. I don&rsquo;t know how many times I&rsquo;ve seen that happen.&rdquo;<br /><br />The 10-time grand slam winner added that she had learned to control her short fuse. &ldquo;I used to have a real temper, and I&rsquo;ve got a lot better,&rdquo; she said. <br />&ldquo;So I know you don&rsquo;t believe me, but I used to be worse. Yes, yes, indeed.&rdquo;