In the matchup between the Spurs and Pistons, the game narrative suggests a likelihood of perimeter shooting, which may limit Castle's rebounding opportunities. Given that Castle has averaged only 2.4 rebounds over his last five games and the Pistons' strength in defensive rebounding, betting on him to stay Under 4.5 rebounds aligns well with these factors. The Net EV of 0.05 indicates slight value, as the evidence suggests a better alignment with a lower rebounding total rather than a breakout performance.