The Heat would welcome an upgrade at the center position, but Erik Spoelstra appears to expect the deadline to pass without a trade. “I am on the phone with Pat [ Riley], but our focus is on this group,” Spoelstra said. “We feel we have enough. Andy [ Elisburg] and Pat and Nick [ Arison] will always look for opportunities to make our team better, but we made a big splash two summers ago.” Read more: http://www.miamiherald.com/2012/03/15/2694625/miami-heat-coach-erik-spoelstra.html