Liverpool legend Jamie Carragher didn't hold back in his criticism of two Reds players following their costly mistakes in Sunday's defeat to Manchester United. The former defender, now a pundit, pinpointed the moments that led to Kobbie Mainoo's winning goal at Old Trafford—a result that left fans fuming and questions swirling around Arne Slot's squad.

The match started disastrously for Liverpool, with both Carragher and Roy Keane tearing into the visitors' first-half performance. After a sluggish start, the Reds showed signs of life with quickfire goals from Dominik Szoboszlai and Cody Gakpo, leveling the score and sparking hope of a comeback. But United's academy graduate Mainoo had the final say, slotting home from just outside the box after a botched clearance from Alexis Mac Allister.

Speaking on co-commentary for Sky Sports, Carragher didn't mince words. "Mac Allister has been involved in two goals. He gave the ball away for the first one. There's normally two or three mistakes with any goal," he said, pointing out the midfielder's role in the decisive moment. But the criticism didn't stop there. Carragher also called out 17-year-old Rio Ngumoha, who had only been on the pitch for two minutes when the goal unfolded.

"Young Rio Ngumoha has to do a lot better. He's a young boy, but when you make subs, they have to be alive when they come on," Carragher explained. "He missed the challenge with [Patrick] Dorgu initially, and then I was watching him and I knew [Luke] Shaw was on the outside of him and he switched off. Small details make a huge difference at this level of football."

Ngumoha's positioning was indeed suspect, with Shaw easily slipping behind him to pick out a cross to the back post. For a player making his mark in a high-stakes derby, it was a harsh lesson in the unforgiving nature of top-flight football. As Carragher noted, every moment counts—and in a rivalry this fierce, lapses can be the difference between glory and defeat.

For Liverpool fans, this loss stings, but it's also a reminder that even the smallest errors can unravel a game. Whether you're a seasoned pro like Mac Allister or a rising star like Ngumoha, the pressure to perform never lets up. As the Reds look to bounce back, these moments will be studied, replayed, and hopefully, corrected.