What happened: David Raya, Ezri Konsa, Martin Odegaard and Kai Havertz fill the four Arsenal places. Ronald Araujo, Cody Gakpo and Alexander Isak give Liverpool three representatives. Tyrick Mitchell, Harvey Barnes, Cesar Palacios and Vitaly Janelt round out the side.
Why it matters: Arsenal lead the league on nine points after scoring six goals and conceding once. Liverpool sit sixth on five points, while Mitchell's two goals helped Crystal Palace win 3-2 at Fulham.
By the numbers: Arsenal hold four of the 11 places, or 36%, and Liverpool have three, or 27%. Together they supply 64% of the side, with Crystal Palace, Newcastle United, Fulham and Brentford contributing one player each.
What to watch: Liverpool host Fulham on Saturday, putting three selections opposite Palacios. Arsenal's quartet will seek to extend the club's perfect start in the fourth league round.