Associated Press: Madison Square Garden named long-time talent agency executive David “Doc” O’Connor as its next chief executive. O’Connor, a managing partner at Creative Artists Agency in New York, takes over for Tad Smith, who was hired to lead the auction house Sotheby’s. Madison Square Garden, which owns the New York Knicks, Rangers, Liberty, said in March that it would separate its sports and entertainment operations from its media business. The media unit runs the MSG Network, MSG+ and regional sports networks.