Patrick Mahomes goes 'Grim Reaper' as Kansas City Chiefs defeat the Buffalo Bills in epic back-and-forth overtime battle

    Patrick Mahomes celebrates after a dramatic victory over the Buffalo Bills.

    (CNN)Did we just watch one of the best games in NFL history?

    We definitely saw two great next generation quarterbacks on display at Arrowhead Stadium as Kansas City Chiefs QB Patrick Mahomes and Buffalo Bills QB Josh Allen put on an absolute clinic on Sunday night in an epic AFC divisional round clash in the NFL playoffs.
    Mahomes threw a walk-off touchdown to Travis Kelce in overtime as the Chiefs finally beat the Bills 42-36 after an all-time encounter which saw twists and turns throughout.
      The game culminated in a wild ending, which saw an extraordinary 25 points scored in the final 1:54 of regulation time.
        With just 13 seconds left and the Chiefs trailing by three points, it seemed implausible that Kansas City could find a way back into the game.
        But Chiefs head coach Andy Reid had some words of inspiration for Mahomes.
        "When it's grim, be the Grim Reaper and go get it," Reid said he told Mahomes before the final drive of regulation. "So he did that. He made everybody around him better which he is great at and, you know, he just does it effortlessly. When it gets tough, he's gonna be there battling and players appreciate that."
          And with the words ringing in his ears, the 26-year-old was able to get his team into position for a game-tying, 49-yard field goal from Harrison Butker.
          Mahomes celebrates a touchdown scored by Tyreek Hill against the Buffalo Bills.
          In overtime, the coin toss became the deciding factor as the Bills and Allen never got back onto the field, the Chiefs driving all the way down the field before Kelce's walk-off touchdown.
          But the game will be remembered as one of the greatest in NFL history, and with two of the league's best young quarterbacks at the helm, it could be a clash we see multiple times in the years to come.
          "It was a heck of a game," Mahomes told CBS' Tracy Wolfson afterwards. "I mean, 17, Josh (Allen), played his a** off, pardon my language. I mean, it was a great game between two great football teams and, at the end of the day, guys like Tyreek (Hill) and Travis (Kelce) made the plays that won us the game."
          The Chiefs advance to host the Cincinnati Bengals in the AFC championship game next weekend after the Bengals beat the AFC No. 1-seeded Tennessee Titans on Saturday.

          A breathless encounter

          Mahomes is already a Super Bowl champion and Allen is an ascending superstar -- hopes were high for a shootout between the two teams.
          And from minute one, it didn't disappoint. The Bills methodically drove down the field on the opening possession to score a touchdown, only for the Chiefs to reply immediately after.
          Both teams' defenses stood up during the next few possessions but once again, both offenses scored touchdowns as they went into halftime tied 14-14.
          The scoring picked up right after the break, Kansas City settling for a field goal, before Mecole Hardman squeezed through Buffalo's defense for a diving touchdown to extend the lead.
          Hardman dives to score a touchdown against the Bills.