In the aftermath of a win over the weekend, Wizards coach Randy Wittman showed concern about his team’s defense. They’d beaten the Phoenix Suns 127-105, but allowed them to shoot 63 percent in the second quarter and had to come from behind as a result. Monday in a 119-114 loss at the Charlotte Bobcats, the NBA’s worst team, the opponent stayed hot for four quarters. The Bobcats (15-52) made 57 percent of their shots in the first half and finished the game at 53.2. The Wizards fell to 5-26 on the road. Charlotte entered the game averaging 93.1 points per game, 27th in the NBA. This month, it dipped to 86.7 in nine games going into Monday. The key to the Bobcats' victory, their third in four meetings with the Wizards to close the season series, was guard play. Kemba Walker, Gerald Henderson and Ben Gordon combined to shoot 23-for-40 for 64 points. Walker and Henderson combined for 15 assists.