DETROIT The corner of Michigan Avenue and Trumbull is sacred ground to Detroit residents. Concerts hosted at the Corner Ballpark are drawing complaints. According to the Detroit Police Athletic League (PAL), they have operated within the agreement it has with the city. PAL said the ballpark is used to host diverse events that provide much-needed funding for its sports programs. There were some residents who didnt want to go on camera but did say they had no complaints about the concerts.