When I read your advise I'd like to ask you if you think that an old Ferrari could compete with actual ones. In any sport it's so. There are a lot of progress. Serena was best at one time but is definitevely surpassed by a lot of newcomers even if they don't already gain. They developped a more complete skill and are maybe impressed by the roaring of a Williams. The play of Serena is poor of variation denoting the fact that such girl is not very intelligent and doesn't practise to improve. She needs definitely to find a coach who can change a lot in her play. So the one who don't improves regresses due to the enhancement of the general level. When you compare the play of Venus and her "poor" little sister there is no photo. Venus has a much more complete skill than Serena. The problem of Venus is the fact that she gets tired after struggling againt a real competitor for more than 90 minutes. She's a sprinter who can not run a mile race. Serena is worse having some difficulty to run during rallies like we saw during the last match of Justine against Venus. Sorry if you can't analyze such !! And remember that an excessive advise is without any importance !!