Newcastle United faces Barcelona in the Champions League last-16, while Liverpool takes on Galatasaray in another first-leg clash.

Context

The Champions League knockout stage features high-stakes matches as teams vie for advancement.S1S2

Key points

• Newcastle United is set to play against Barcelona in the first leg of their Champions League tie.S1

• Liverpool will compete against Galatasaray in their own first-leg match of the last-16.S2

• Alisson's injury leads to Giorgi Mamardashvili starting in goal for Liverpool.S2

• Liverpool has made five changes to their starting lineup from their recent FA Cup victory.S2

• Milos Kerkez replaces Andy Robertson at left back for Liverpool.S2

• Ibrahima Konaté returns to Liverpool's central defense, prompting Joe Gomez's shift to right back.S2

• Curtis Jones has been moved to the bench for Liverpool's match against Galatasaray.S2

• Florian Wirtz is included in Liverpool's starting XI, replacing Rio Ngumoha and Cody Gakpo.S2

Why it matters

• These matches are crucial for teams aiming to progress in the prestigious Champions League tournament.S1S2

• Injuries and lineup changes can significantly impact team performance and strategy in knockout rounds.S2

What to watch

• Monitor the performance of Newcastle United against Barcelona, particularly their tactical approach.S1

• Watch for Liverpool's adjustments in response to their lineup changes and Alisson's absence.S2