NEWS Chicago, Miami and Oklahoma City will open the NBA playoffs Saturday, though their opponents are still to be determined. Thunder guard James Harden has been cleared to play after recovering from the concussion he suffered when the Los Angeles Lakers’ Metta World Peace elbowed him in the back of the head. NOTES The NBA on Thursday announced that Rose’s jersey is the most popular, based on sales at the temporary NBA Store on Fifth Avenue and on NBAStore.com from April 2011 to present. Chicago