The star of Yair Rodriguez continued to rise on Sunday when the featherweight prospect defeated B.J. Penn in the UFC Fight Night 103 headliner at Talking Stick Resort Arena in Phoenix.

Rodriguez (10-1 MMA, 6-0 UFC) remained unbeaten inside the octagon when he spoiled the latest comeback of UFC Hall of Famer Penn (16-11-2 MMA, 12-10-2 UFC) with a completely one-sided second-round TKO victory over for the former two-division UFC titleholder.

Check below for the top Twitter reactions to Rodriguez’s victory over Penn in the UFC Fight Night 103 main event.

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BJ Penn out to "Hawai'i 78 Introduction" by Israel Kamakawiwo'ole#UFCPhoenix — Damon Martin (@DamonMartin) January 16, 2017

Yair Rodriguez out to "El Corrido De Chihuahua" by Los Rieleros del Norte#UFCPhoenix — Damon Martin (@DamonMartin) January 16, 2017

Damn they look like they're two weight classes apart — James Vick (@JamesVickMMA) January 16, 2017

At least BJ isn't standing tall; that's a win. #UFCPhoenix — Mike Jackson, Esq. (@TheTruthJackson) January 16, 2017

Speed difference is pretty big. Yair is fleet of foot with quick hands. — Luke Thomas (@SBNLukeThomas) January 16, 2017

What happened to Penn's striking? This is much better than the Edgar fight, but still bad — Matheus Aquino (@MatheusDCAquino) January 16, 2017

A middle finger for anybody who ever tried to talk me out of retirement. — Din Thomas (@DinThomas) January 16, 2017

Yair Rodriguez treating BJ Penn like dirt in this fight. — Andreas Hale (@AndreasHale) January 16, 2017

Man that has to be 10-8 for yair with those left kicks just landing body, head, leg at will. #sad #ufcphoenix — Sarah Kaufman (@mmasarah) January 16, 2017

I want to see BJ circle away from the power kick and close the distance #ufcphoenix — Chris Camozzi (@ChrisCamozzi) January 16, 2017

It's a disadvantage at this point if how tough BJ is. Love this guy and this is just hard to watch. Yair looks so precise. #UFCPhoenix — MikeSwick.com (@officialswick) January 16, 2017

I'm not enjoying seeing this anymore @ufc — Alan Jouban (@AlanJouban) January 16, 2017

Anybody who knows me, knows I started fighting because of BJ vs GSP. I respect BJ a lot but this is hard to watch — Kevin Lee (@MoTownPhenom) January 16, 2017

Damn!! Sucks to see the legend getting smashed like this. Breaks my damn heart. — Phillipe Nover (@PhillipeNover) January 16, 2017

Front kick with a short right hand floors Penn to start Round 2. Yair unleashes a flurry of ground & pound. Big John waives it off! Over. — Ryan McKinnell (@RyanMcKinnell) January 16, 2017

Hard to watch a legend take that punishment. #ufcphoenix — Shannon Knapp (@shanknapp) January 16, 2017

😬😬😬 — Derek Brunson (@DerekBrunson) January 16, 2017

Father time won tonight. — Will Brooks (@ILLxWillBrooks) January 16, 2017

I didn't enjoy that 😕 — Cub Swanson (@CubSwanson) January 16, 2017

Still a huge @bjpenndotcom fan. — Nina Ansaroff (@NinaAnsaroff) January 16, 2017

BJ looked unhealthy didn't look like he was not in the fight mind was somewhere else. — Brian Ortega (@BrianTcity) January 16, 2017

WoW again @panteraufc finish @ufc Such diverse striking – very impressive — Big Ben Rothwell (@RothwellFighter) January 16, 2017

Considering how good Yair's striking was standing-up, what's up with the weird, wavy arm flurries after he dropped Penn? Hammerfists, bro. — The Spartan (@EliasTheodorou) January 16, 2017

Am I the only one who gets heart broken when legends go down to a stellar young gun. #PassingTheTorch 💔💔💔 — Yves Edwards (@thugjitsumaster) January 16, 2017

Great work tonight my dude @panteraufc …always awesome to see you work 🙌 — Lando Vannata (@GroovyLando) January 16, 2017

You beat a retired, 37 year old BJ Penn. settle down. — Lance Palmer (@LancePalmer) January 16, 2017

#YairRodriguez has talent. He showed precision & speed; #bjpenn showed patience & heart. Congrats Rodriguez. — KEN SHAMROCK (@ShamrockKen) January 16, 2017

Wish I could say I want to see BJ fight again — Matt Brown (@IamTheImmortal) January 16, 2017

I love Yair and think he is the future of the sport. But you can't ignore or dismiss BJ Penn's legacy in MMA. It's a mad, crazy hard world. — Julie Kedzie (@julesk_fighter) January 16, 2017

For the love of our MMA pioneers, Penn shouldn't fight another young cat again. Or give him someone his age or at the end of their career 😔 — Aljamain Sterling (@FunkMaster_UFC) January 16, 2017

I am just so sad… #UFCPhoenix — Sarah Kaufman (@mmasarah) January 16, 2017

What a stupid fight, everybody knew ahead of time that was going to happen, who was the matchmaker on that one? #ufcphoenix #ufc #bjpenn — Mike Ciesnolevicz (@MikeCies) January 16, 2017

I'm actually happy it ended now. Didn't want to see BJ taking a prolonged beating for more rounds. @ufc #legend — Alan Jouban (@AlanJouban) January 16, 2017

According to my math (from @FightMetric numbers), strikes landed in BJ Penn's last 5 fights: Opponents 828, Penn: 275. — Mike Chiappetta MMA (@MikeChiappetta) January 16, 2017

Penn is a legend and always will be !!! Thanks BJ !!! @ufc #ufcphoenix — patrick cote (@patrick_cote) January 16, 2017

Nothing but respect to BJ. He's a legend and has accomplished amazing things. Fighters don't age gracefully. — The Diamond (@DustinPoirier) January 16, 2017

BJ BJ BJ BJ BJ BJ @bjpenndotcom — Amanda🦁Nunes (@Amanda_Leoa) January 16, 2017

It took a UFC-record 1,034 significant strikes absorbed before BJ Penn suffered a knockdown. #UFCPhoenix — Michael Carroll (@MJCflipdascript) January 16, 2017

Longest Active UFC Win Streaks, Featherweight

Holloway, 9

McGregor, 7

YAIR RODRIGUEZ, 6#UFCPhoenix — Michael Carroll (@MJCflipdascript) January 16, 2017

UFC Fight Night 103 results: Yair Rodriguez devastates Hall of Famer B.J. Penn for TKO win https://t.co/qW0EzWOizd — MMAjunkie (@MMAjunkie) January 16, 2017

For complete coverage of UFC Fight Night 103, check out the UFC Events section of the site.