Bulls secure PlayIn spot but stumble against Hawks

CHICAGO — Following the Bulls’ 123-105 home loss to Atlanta, Zach LaVine was asked whether he believed the Bulls were beyond performances like Tuesday. In Game 79, with a chance to climb the Eastern Conference standings, Chicago exhibited a surprising lack of energy, focus and execution in a game the Hawks controlled throughout. Atlanta led by as many as 20 points, while the Bulls’ biggest lead was just two. For much of the night, Atlanta’s lead ranged between 10 and 20. “We knew every one of these games were must-win games for us,” LaVine said. “Obviously we didn’t do good…