On Saturday, Ian Machado Garry challenges Islam Makhachev for the welterweight title in the main event of UFC 330. Garry is a sizable underdog against the top pound-for-pound fighter in the sport, with many people looking past Garry at what comes next for Makhachev, but Garry's fellow Irishman isn't one of them.

In a post to his Instagram, McGregor gave his prediction for Saturday's main event, saying Garry will pull off the upset.

“What's up, folks! The Mac here to give you my prediction for the Makhachev-Garry fight,†McGregor said. “Let's go Garry, you know it! He has the tools. He's been doing great work at SBG. He's long. He's definitely going to stay safe; he's definitely going to be in there.

“Makhachev has pockets where he does a lot of stalling. He still has things to prove in that welterweight division. He does look like he's grown up into it a bit more. It's a cracking contest. Of course I'm going with Ian Garry, and I really believe he can do it. For sure he can do it.â€

Aside from being countrymen with Garry, McGregor also has some history with Makhachev's team, and his infamous feud with Khabib Nurmagomedov. How much that might be weighing on McGregor's prediction is up for debate, but “Notorious†is convinced Garry not only wins, but gets the job done in style.

“How do I see it? Right high kick across the crown of the head, and a victory for the Irish-Brazilian,†McGregor said. “Let's go, Ian! Rooting for you, bro. Great scrap.

“What round? Late round. This goes late, folks. This goes late, this fight. Great fight, very much looking forward to it.â€

In the main event, MMA Fighting's No. 1 Pound-for-Pound fighter Islam Makhachev goes for the first defense of his welterweight title as he takes on challenger Ian Machado Garry. Makhachev looks for another championship victory after previously defending the lightweight title a UFC record four consecutive times, while Garry brings a 10-1 UFC record into the contest.

Both fighters need to weigh 170 pounds or less for the title fight.

In the co-main event, strawweight champion Mackenzie Dern defends her belt against Gillian Robertson. Dern won a vacant title in the absence of Zhang Weili with a unanimous decision win over Virna Jandiroba at UFC 321 and she can strengthen her claim to being the true 115-pound champion with a win over Robertson, who can become the first Canadian woman ever to win UFC gold.

Both fighters need to weigh 115 pounds or less for the title fight.

Watch MMA Fighting's weigh-in highlights from the championship bouts below.

The UFC 330 official weigh-ins kick off above at 9 a.m. ET / 6 a.m. PT.

The UFC 330 ceremonial weigh-ins will be at 6 p.m. ET / 3 p.m. PT.

Check out UFC 330 weigh-in results below.

Main Card (Paramount+ at 9 p.m. ET)

Islam Makhachev (170) vs. Ian Machado Garry (170)

Mackenzie Dern (115) vs. Gillian Robertson (115)

Jalin Turner (156) vs. Kaue Fernandes (156)

Mansur Abdul-Malik (186) vs. Dustin Stoltzfus (185)

Edson Barboza (156) vs. Esteban Ribovics (156)

Preliminary Card (Paramount+ at 7 p.m. ET)

Chidi Njokuani (171)* vs. Joel Alvarez (171)

Charles Johnson (129.5) vs. Eduardo Chapolin (129.5) — 130-pound catchweight bout

Donte Johnson (184.5) vs. Eric McConico (186)

Vicente Luque (186) vs. Tresean Gore (186)

Early Prelims (Paramount+ at 5:30 p.m. ET)

Rafael Tobias (204) vs. Lucas Fernando (205)

Neil Magny (171) vs. Ramiz Brahimaj (170)

Myktybek Orolbai (170.5) vs. Jeremiah Wells (171)

Main event backup: Michael Morales (170)

*Njokuani missed weight on first attempt (171.5), but successfully made weight on second attempt