Shawn Catlin was fed up with corporate kickball. The league was too disorganized, too pricy and too competitive. So Catlin decided to start a Kansas City kickball chapter of the Midwestern Unconventional Sports Association. Now he extends an open invitation to kickballers and drinkers for a free pickup game tonight at 7 at Rosedale Park (4000 Mission Road in Kansas City, Kansas). Players may register there for Catlin’s new league, which kicks off in late August. Games are tentatively slated for Friday nights this fall, but Catlin is open to suggestions. He stresses that the new league is a “social” one. That’s clear from the logo emblazoned on MUSA’s big red balls — a smiling ball clutching a foamy beer as if in toast. “We’re just out to have fun,” Catlin tells the Pitch. “It’s not professional kickball.” Registration for a team of 15 costs $500 (about $33 a person). For more information, see musakickball.com.