Troy Dixon, 22, a dancer for the rap group Heavy D & The Boyz. Police said Dixon, whose stage name is Trouble T-Roy, was standing on the third-level ramp at the Market Square Arena in Indianapolis late Saturday when another group member, while fooling around, rolled a trash barrel down the ramp toward him. Dixon jumped on a four-foot retaining wall to avoid the barrel and fell over backward 30 feet to the ground. The group, from Mt. Vernon, N.Y., was on a 10-city tour and was one of the headline acts for Indianapolis' Black Expo, which also featured the rap group Public Enemy. Heavy D & The Boyz won a Soul Train Music Award and an NAACP Image Award for their album "Big Tyme."