One of the oldest — and now biggest — tournaments in tennis opens Saturday (through Aug. 19), with most of the best players in the world competing for more than $5 million in prize money. Long known as an important warm-up to the U.S. Open, the Western & Southern has continued to evolve in recent years, reaching a high point in 2011 with the first-ever simultaneous running of the men’s and women’s events and an impressive expansion of the Lindner Family Tennis Center in Mason to include six new courts, a host of local food vendors, multiple special events and even live music. But, of course, it’s the players that command most of the attention — everyone from defending men’s champion and recent Olympic gold medalist Andy Murray and current world No. 1 Roger Federer to recent Wimbledon/Olympic champion Serena Williams and current women’s world No. 1 Maria Sharapova will do battle. For schedule and ticket information, go to 513-651-0303 or go to cincytennis.com. Lindner Family Tennis Center. 5460 Courseview Drive.