WASHINGTON (Agencies) - Andre Agassi turned 41 last week, and Pete Sampras will hit 40 this summer, so both were pleased that tennis Champions Series is changing to a less-demanding format. The 2011 schedule, announced Tuesday, shifts from multiple-day tournaments to one-night stops in 12 cities over five weeks. Four of the tours seven participants will compete at each event, playing one-set semifinals before the winners meet in an eight-game, pro-set championship match. It makes sense for us, because our bodies can sort of withstand the tennis, Sampras said in a telephone interview. I can still serve pretty hard, pretty well and sort of paint the lines. Thats what people want to see. Ill do my best to prepare and go out and not embarrass myself. In addition to longtime rivals Sampras and Agassi, the players lined up for the tour are Jim Courier, who helped found the Champions Series in 2005 and is now the U.S. Davis Cup captain; John McEnroe, Bjorn Borg, Mats Wilander and Michael Chang. That group won a combined total of more than 50 Grand Slam singles titles, led by Sampras 14. All reached No. 1 in the rankings except Chang, who made it to No. 2. We all still can play pretty darn well if were healthy and we feel good, Agassi said on a conference call with Courier, who will be 41 in August. Its just the recovery that we all seem to recognize gets tougher as we get older. Sampras, Agassi, Courier and Chang came up through the junior ranks together, then dealt with each other throughout their careers on the professional tour. It can only help tennis for people to see a generation of American players that might have been the best of all time, especially in cities that havent had tennis in a whileSeattle, Philadelphia, Chicago, Sampras said. People can get behind it, and maybe some kids might be moved by it, and instead of staying home in front of a computer, they can come see us in person. Courier touted the importance of crisscrossing the country to push their sport while, he said, working hand-in-hand with the local tennis community. At seasons end, a bonus pool of $1 million will be split by the top three players in the Champions Series rankings. Tickets go on sale next week. Its a five-week season, which we condensed to make it not only easy to follow for fans and media alike, but also easier for us players to get up from a practice and fitness standpoint and be ready to compete, Courier said.