Call this a Serena incident (before there was a Serena incident). From the book ON THIS DAY IN TENNIS HISTORY ($19.95, New Chapter Press, www.TennisHistoryBook.com), it was on Oct. 4, 2007 that Stefan Koubek used “strong language” to challenge officials and was disqualified from his second-round match at the Metz Open in France. The book […]