Sports cards can be a good alternative investment for collectors who understand what drives their prices: athlete performance, career legacy, rookie status, scarcity, print run, condition, and professional grading. Values can rise sharply when a player has a strong season or reaches a career milestone, but they can also fall quickly if a player underperforms, gets injured, or fades from public attention. This guide explains the main value drivers, the risks specific to sports cards, and how Splint Invest evaluates them before offering a card to investors.