The shots were falling Saturday for Pistons rookie Luke Kennard. For the first time in almost a month, he scored in double figures, going for a career-high 20 points in the victory over the San Antonio Spurs. Kennard played a career-high 30 minutes and went 7-of-12, including 4-of-5 on 3-pointers. With an injury depleted lineup, missing four of his regular rotation players, coach Stan Van Gundy had to lean on the reserves a bit more — and Kennard and Reggie Bullock (22 points) came through, both with career-best scoring games. It’s been one of the loudest refrains from Kennard fans: Give him more playing time and he can produce. In his 30 games, Saturday marked the seventh time he scored in double figures, with four starts mixed in. He hasn’t gotten the volume of minutes to score at that level; it’s been a work in progress to earn playing time. Van Gundy repeatedly has said that the key for Kennard to get more playing time is improved defense; he’s had mixed results when guarding one of the premium positions on the court and he sometimes gets lost in the mental part of the game and staying locked in on game plans, rotations and assignments.