Both of these games pit an attack in good shape against a back line that has been patched together. USA and Canada each come in with a defence shaped by rotation and absences. Chicago and Vancouver have each lost regulars at the back to international duty. In both matches, what each team does best points straight at the spot the other side is weakest.
Start with St. Paul. Canada's back four has been rebuilt through this window. Johnston, Bombito and Davies were left out of the squad, while Cornelius, Alfie Jones and Koné are injured. The two clean sheets came against Peru and against a Chile side down to ten men from the 35th minute.
USA have scored in every one of their last ten games, and young attackers like Julian Hall and Cavan Sullivan have been sharp all window.
The other side of it: Pochettino is expected to give Dest, Campbell and Pierre minutes at the back in the fourth game of a long camp. When Pierre started against Chile, the visitors scored twice either side of half-time.
Marsch's Canada press high, push the ball wide and pounce on mistakes. Jonathan David, Promise David and Oluwaseyi are all still there to finish those chances, even with Larin and Buchanan gone.
At Soldier Field, the club confirms Lewandowski is back after a hat trick for Poland. He comes up against a Vancouver defence without Ocampo and Gherasimencov, and with Priso away with Canada.
The last time the Whitecaps played with a list of absentees this long, they drew 3-3 with DC United. They gave up 2.42 xG and eight shots on target in that game.
Vancouver average over two expected goals a game, and Brian White leads the league with 17. They meet a Chicago side still on backup keeper Josh Cohen and without left-back Noah Allen. Chicago have conceded in nine of their last ten.
Neither team has a reason to sit back. Chicago are a point off the East's top four with a game in hand. Vancouver sit top of the West.