Two conference contenders suddenly engulfed in question marks meet up Wednesday night when the Boston Celtics continue a Western swing against the Golden State Warriors. The Celtics (40-24) moved within three games of the top spot in the Eastern Conference when they beat Cleveland 103-99 a week ago. The Celtics were without Al Horford (sprained elbow) in their losses to Phoenix and the Los Angeles Clippers on Sunday and Monday, but he is expected back for the showdown with the Western Conference's top team, Golden State.