The first half of Saturday's Manchester derby was incredibly one-sided.Manchester City rocked up to the home of their fiercest rivals and dropped an incredible team performance in the opening 45 minutes.Pep Guardiola's side took the lead early on when Manchester United's Eric Bailly fired the ball into his own net from Joao Cancelo's cross.After that, City were utterly dominant and the visitors deservedly took a 2-0 lead just before the half-time interval through Bernardo Silva.And once again, it was a defensive disaster from United.Harry Maguire and Luke Shaw just stood around as if Cancelo's brilliant cross into the box was not a dangerous one, while David De Gea didn't exactly cover himself in glory either.GMS GiveawayENTER GIVEAWAYSilva couldn't believe his luck, the Portuguese playmaker toe-poking the ball over the line at the back post while completely unmarked.Take a look at City's second goal here...

Video: City's second vs Man Utd

Premier League 2021/22: Fixtures, Results, Odds, Ball, Tickets And Everything You Need To Know

Oh dear...

United have now not kept a clean sheet in their last 14 Premier League home matches, a truly woeful record.

In the 5-0 defeat to Liverpool, the team's defence was hopeless and they really weren't much better in the first half against City.

Maguire in action vs City

It appears Raphael Varane is already of vital importance to United, despite only signing in the summer from Real Madrid...