Mackenzie Dern put on a real champion’s performance to defend her title at UFC 330 on Saturday.Dern put her women’s strawweight belt on the line for the first time in the co-main event of UFC 330, having claimed her throne last October with a unanimous decision win over Virna Jandiroba.Dern completely dominated Robertson in the first three roundsGettyThe champion was getting the better of her opponent on the feet and on the canvasGettyThe event at Philadelphia’s Xfinity Mobile Arena was headlined by a UFC welterweight title bout between Islam Makhachev and Ian Machado Garry.Dern dominates at UFC 330From the opening exchanges right through the final bell, Dern dominated Robertson, showing levels in all departments.The champion beat up Robertson’s lead leg, outboxed her opponent on the feet and won almost every exchange on the canvas.Robertson had her best spell in the fifth and final round, but it was far too little too late as Dern cruised to a comfortable unanimous decision.After five rounds, two judges scored the fight 49-46 while a third ruled it 48-47 to hand Dern the victory.“I’m super happy,” the 33-year-old from Brazil told Joe Rogan after the co-main event.“I’ve been working my wrestling so I can be well-rounded. I wanted to get the submission, but she’s very good at jiu-jitsu, so it was hard.“I try to get submissions in all my fights. Anyone who is fighting for the belt has decent enough defence.“I wish I could’ve dealt more damage to get the submission.”Also at UFC 330, Edson Barboza announced his retirement from MMA after a second-round stoppage defeat against Esteban Ribovics.And Jalin Turner scored a 39-second KO in his second bout since reversing his decision to retire from the sport.This is a developing story and is being updated.For the latest updates, breaking news alerts, and comprehensive analysis, refresh this page or follow our real-time news coverage by watching and listening to talkSPORT live.For broader context, explore related coverage on our homepage for the top trending stories. For the latest talkSPORT videos, download the app.talkSPORT cares about getting it right, not just getting it first and because this is a developing situation, details will change. We will be updating this page constantly with verified info, expert takes, and official statements.Stay tuned for further developments as this story continues to break.