 During hot summer nights, fireworks are sometimes used to signify the commencement of the baseball games.On January 23, 2004, developer Bruce Ratner announced that he had purchased the National Basketball Association's Nets franchise (then known as the New Jersey Nets) and started on his plan to move the Nets to the 18,000-seat Barclays Center as part of the Atlantic Yards development at Flatbush and Atlantic Avenues.After years of delays caused by community opposition and financial difficulties, the arena broke ground in March 2010 and opened in September 2012.