Washington Wizards fans will never know how this 2012-13 campaign would have played out under more favorable circumstances. If John Wall hadn’t missed the first 33 games with a knee injury. If Nene hadn’t been limited by a foot ailment. If all had gone as planned. But to Wall, one thing is certain: This would have been a playoff team. In his mind, in fact, it still could be. “Everybody knows what team we would be like,” the point guard said. “We’re showing teams now.” With an 89-74 win over the Brooklyn Nets (29-21) at Verizon Center on Friday, the Wizards (14-35) reeled off their third straight triumph over a postseason contender following victories against the division-leading Los Angeles Clippers and New York Knicks. After a 4-28 start, the Wizards have won 10 of their last 17 and 8 of 9 at home. Even if contesting for a playoff bid remains a long-shot proposition at best, it’s an encouraging turn. “I really do feel confident in this team,” forward Chris Singleton said. “Over the last week, it shows that if we continue to play together, anything can happen.”