Steve Kerr sounded like an NFL head coach before Monday night's game at Oracle Arena, preaching "ball security" as if it were the gospel and his starting running back had betrayed him with a costly fumble. Kerr was asked if he noticed anything troubling while reviewing video of his team's mostly impressive Game 1 victory over San Antonio on Saturday. He quickly offered a familiar lament: He was less than thrilled with the nonchalant way the Warriors handled the basketball, even if they won by 21 points. "I thought we got very careless with the ball in transition," Kerr said. "I'm interested in our ball security. To me, that's what this series is about.