(John Schuhmann) reports: The Cavs currently rank as the second-best defensive team in the league, just behind the Celtics, allowing 101.5 points per 100 possessions. Last season, they didn’t crank up the “D” until the postseason, but this year has been different. “Everybody bought into the system and everybody is committed to playing defense,” Ben Wallace said Monday in Los Angeles. “That was one of the things we stressed in training camp. “Defense has to start with the individuals. You can’t be a good team defense if you got five poor individual defensive players out on the floor, so it has to start with an individual. Everybody has to take it personal that they’re going to go out there and do whatever they can do to go out there to try to get stops. Once one, two, three players start it, it gets contagious and everybody buys into it.”