O'Brien Field is a 10,000-seat multi-purpose stadium in Charleston, Illinois. It is home to the Eastern Illinois University Panthers football and track and field teams. O’Brien Field is named after Maynard O'Brien who coached football and track at Eastern Illinois University. The stadium features a nine-lane track and in 2004 an artificial turf field was installed. In 2009 a state of the art scoreboard was installed on the north end of the field with a video board and new sound system.