With their win over the Portland Trail Blazers, they've moved above .500 against them, to earn that distinction.
You know, the Celtics have more championships than anyone. The Lakers are right behind them, have the most Finals appearances in league history, and until recently, always seemed to stay relevant. The Bulls dominated much of the 90s, and are undefeated on the NBA's biggest stage. The Heat and Pistons have both had some great seasons, and runs atop the league with three championships apiece. But with this accomplishment on top of their five titles in six appearances, and all their 50+ win seasons over the span of more than a quarter of a century, the Spurs have quietly become one of the league's most consistent and decorated powerhouses. I mean, we all know they've been good for a long time, but they've achieved a lot without a lot of fanfare.