It is a head-spin development from the fight the 76ers have lodged over the last two years when it sought to build a new arena in Chinatown and close to the city’s center, and as it went to battle with Comcast,

Mayor Cherelle Parker said she supports plans to keep the Sixers basketball team in South Philadelphia, instead of building a new arena in Center City.

The stunning reversal comes as a relief to critics of the plan to put a $1.3 billion arena near City Hall at the edge of Chinatown. Mayor Cherelle Parker on Monday called the proposal “a win, win, win,