Short-handed Spurs face Celtics
Spurs coach Gregg Popovich jokingly asked a media member who he would like to see as the starting point guard, before saying that Cory Joseph would get the nod.
Parker, the team leader with 17.7 points and 6.2 assists per game, is out with tightness in his lower back. He played in San Antonio's previous two games at Charlotte and Detroit.
Ginobili has a tight left hamstring and is missing his eighth straight. Splitter is out for his third consecutive because of a bruised right shin.