Pro CS:GO map kill totals average 180-250; a BO3 aggregate sum typically spans 360-750. The market prices this as binomial 50/50, but the summation of numerous discrete kill events across multiple maps biases the final digit towards even. Statistical regression for large integer sums derived from base-10 inputs, common in round-based game metrics, subtly favors an even outcome. Expect this slight edge to hold. 55% YES — invalid if any map is forfeited or cancelled mid-game.