If you bet on Kansas City when the line was originally posted for Saturday’s Chiefs-Colts matchup, then placed a bet on Indianapolis just before kickoff, you would have won both bets.
Kansas City was installed as a 2½-point underdog, but money flowed to the Chiefs and eventually left them as 2½-point favorites moments before the game began. If you played both sides of this bet and operated within those spreads, you would have pulled off a rare move, known as a “middle” in gambling circles.
The final score — 45-44, Indianapolis — was a best-case scenario for anyone with the savvy and guts to middle an NFL playoff game. And consider for a moment the mental state of those who bet this game traditionally. Gamblers who took the Colts at plus-2½ — such as myself — considered their bet a loss when Kansas City led, 38-10, in the third quarter. On the other side, those who took the Chiefs as a small favorite had to feel good about a 28-point second-half lead, only to be crushed by the finish. Full story for BostonGlobe.com subscribers.