When it comes to the world of mixed martial arts, anything can happen inside the cage. Upsets, surprising victories, and underdog triumphs are all part of the game. In a hypothetical scenario based on historical data, let's explore how Brandon Royval, a skilled fighter in the Flyweight division, could potentially defeat the fearsome heavyweight Francis Ngannou.

Brandon Royval is coming off an impressive victory over Tim Elliott at UFC on ESPN 9 - Woodley vs. Burns. Royval secured a submission victory over Elliott at 3:18 in the second round with an Arm-Triangle Choke. This win showcased Royval's grappling prowess and ability to finish fights even against tough opponents.

Looking back, Tim Elliott managed to defeat Iliarde Santos at Titan FC 34 - Healy vs. Edwards. In a five-round battle, Elliott secured a unanimous decision victory over Santos, displaying his durability and cardio in a grueling fight.

Iliarde Santos, in turn, defeated Gilmar Dutra Lima at Samurai FC 2 - Warrior's Return. Santos wasted no time in dispatching Lima, getting a TKO victory in just 23 seconds into the first round. This quick finish highlighted Santos' explosive striking and killer instinct.

Gilmar Dutra Lima then went on to defeat Alexandre Goncalves at NCF - Nitrix Champion Fight 13. Lima and Goncalves engaged in a three-round war, with Lima emerging victorious by unanimous decision. Lima showed his well-rounded skill set and ability to outpoint his opponent in a close fight.

Alexandre Goncalves secured a TKO victory over James Silveira at SFC - Slap Fight Combat. Goncalves' striking power proved to be too much for Silveira, as the fight was stopped at 1:05 in the second round. This win highlighted Goncalves' ability to finish fights with his hands.

James Silveira, on the other hand, defeated Tyago Moreira at AWF - Arena Wolf Fight 2. Silveira quickly submitted Moreira with a Guillotine Choke in the first round, showcasing his skill in grappling and finishing fights efficiently.

Tyago Moreira secured a knockout victory over Jailton Almeida at Katana Fight - Gold Edition. Moreira wasted no time in dispatching Almeida with a devastating punch just 16 seconds into the first round. This win highlighted Moreira's power and ability to finish fights in spectacular fashion.

Jailton Almeida managed to defeat Derrick Lewis at UFC Fight Night 231 - Almeida vs. Lewis. In a five-round battle, Almeida secured a unanimous decision victory over Lewis, showcasing his toughness and skill in outpointing a heavy hitter like Lewis.

Derrick Lewis famously defeated Francis Ngannou at UFC 226 - Miocic vs. Cormier. In a three-round war, Lewis emerged victorious with a unanimous decision over Ngannou. This win showcased Lewis' durability and ability to weather the storm against a powerful striker like Ngannou.

Now, if we look at the chain of victories leading from Brandon Royval to Derrick Lewis defeating Francis Ngannou, we can see a path for Royval to potentially pull off an upset against the heavyweight giant.

Royval's submission skills and ability to finish fights on the ground could pose problems for Lewis, who has shown vulnerabilities in grappling exchanges in the past. If Royval can use his speed and agility to avoid Lewis' power strikes and take the fight to the ground, he may be able to secure a submission victory.

Additionally, Royval's cardio and conditioning, as seen in his fight against Tim Elliott, could also play a significant factor in wearing down Lewis over the course of a five-round fight.

In conclusion, while it may seem like a far-fetched scenario for a Flyweight fighter to defeat a Heavyweight contender like Francis Ngannou, the unpredictability of MMA and the interconnected nature of victories in the sport leave the door open for surprises. If Brandon Royval can capitalize on his strengths and exploit his opponent's weaknesses, he just might have a chance to shock the world and pull off a monumental upset against the feared knockout artist, Francis Ngannou.