Naming the best UFC heavyweight fight of all time is a task rooted in subjectivity. There have been an array of slugfests and thrilling brawls in the division's history, and today, five pivotal heavyweight fights will be examined.Below are five of the most exciting heavyweight fights in UFC history:#5. Cain Velasquez vs. Brock LesnarThe bout saw the beginning of one era and the end of another.Cain Velasquez entered the contest with an 8-0 record, but was the underdog heading into the fight. He earned a technical knock out over Brock Lesnar in the first round to secure the title.UFC@ufc#OnThisDay - Cain Velasquez finished Brock Lesnar with complete domination [ Watch more on @UFCFightPass ]86801265#OnThisDay - Cain Velasquez finished Brock Lesnar with complete domination 😳[ Watch more on @UFCFightPass ] https://t.co/y5o8hy3K9O#4. Junior dos Santos vs. Cain Velasquez 3 - UFC 166Junior dos Santos and Cain Velasquez were regarded as two of the greatest heavyweights during their prime years. The pair went to war three separate times, but their trilogy bout was by far the bloodiest affair of them all.Velasquez thoroughly dominated dos Santos, landing big punches consistently before earning the TKO stoppage in round 5.Photo of round 5 of UFC 166 between Cain Velasquez and Junior dos Santos#3. Pat Barry vs. Cheick Kongo - UFC on Versus 4Cheick Kongo pulled off arguably the most remarkable comeback win in MMA history against Pat Barry in 2011. Barry hurt Kongo in Round 1 with a series of punches, and the Frenchman seemed to be out on his feet before landing a punch that knocked Barry out cold.UFC on BT Sport@btsportufcNine years ago today, Pat Barry and Cheick Kongo produced the craziest 30 seconds of action in UFC history 🤯*automatically retweets*44531485Nine years ago today, Pat Barry and Cheick Kongo produced the craziest 30 seconds of action in UFC history 🤯*automatically retweets* https://t.co/aRoH94pPDO#2. Randy Couture vs. Tim Sylvia - UFC 68Randy Couture did the impossible against Tim Sylvia at UFC 68 in 2007 when he came out of retirement after more than 12 months to reclaim the UFC heavyweight title.Couture had not competed at heavyweight in five years and gave up seven inches in height to his opponent. Despite the odds being stacked against him, 'The Natural' dominated Sylvia thoroughly.MMA Junkie@MMAJunkie years ago today: 43-year-old @Randy_Couture comes out of retirement and becomes the oldest champ in UFC history, dominating Tim Sylvia to win heavyweight gold #UFC68📸 @muls96 – @usatsimg Full event results: bit.ly/2GZXHa12271️⃣ 1️⃣ years ago today: 43-year-old @Randy_Couture comes out of retirement and becomes the oldest champ in UFC history, dominating Tim Sylvia to win heavyweight gold #UFC68📸 @muls96 – @usatsimg Full event results: bit.ly/2GZXHa1 https://t.co/8oSdDzwPkS#1. Daniel Cormier vs. Stipe Miocic 3 - UFC 252The trilogy fight between these two all-time greats took place in August 2020 and was set to decide the greatest heavyweight in MMA history, according to UFC president Dana White.Daniel Cormier announced he would retire following the trilogy fight, which added to the pre-fight anticipation alongside White's comments. The bout was a competitive affair that was awarded to Stipe Miocic after going all five rounds.MMA History Today@MMAHistoryTodayAug15.20202 years ago today,Stipe Miocic and Daniel Cormier completed their trilogy at UFC 252.137750Aug15.20202 years ago today,Stipe Miocic and Daniel Cormier completed their trilogy at UFC 252. https://t.co/kVqNQY7rV5Jon Jones welcomes Daniel Cormier to commentate UFC heavyweight fight against Ciryl GaneJon Jones will be making his return to MMA as a UFC heavyweight against Ciryl Gane. The pair are set to headline UFC 285 in March and will battle for the vacant heavyweight title.'Bones' has welcomed former rival Daniel Cormier to commentate on his UFC heavyweight title fight. The pair shared one of the most heated rivalries in UFC history, but it seems they have put that behind them.Jones posted this on Twitter:"In all seriousness DC, I'm cool with you bro..."See the tweets below:BONY@JonnyBonesIn all seriousness DC, I’m cool with you bro. I recognize the man you are, I wasn’t lying when I said those things in my post fight interview. Outside of us being fierce competitors I dig the way you represent yourself, the wrestling community, our community, and our sport598142556In all seriousness DC, I’m cool with you bro. I recognize the man you are, I wasn’t lying when I said those things in my post fight interview. Outside of us being fierce competitors I dig the way you represent yourself, the wrestling community, our community, and our sportBONY@JonnyBonesDC you are more than welcome to commentate at my fight, I think you are really good at what you do. I trust that you would be non-biased. All the best brother621433107DC you are more than welcome to commentate at my fight, I think you are really good at what you do. I trust that you would be non-biased. All the best brother