We’re less than 24 hours from the start of the quarterfinals at the 2018 World Cup in Russia.

Captivating storylines have been plentiful through the first 20 days of the tournament. Here’s five to keep an eye on when the eight remaining teams return to action on Friday and Saturday.

[ MORE: Latest 2018 World Cup news ]

Is it really coming home?

When England let Belgium beat them lost to Belgium on the final day of the group stage, it sent the Three Lions to the “easier” side of the knockout bracket — while the Red Devils headed to the side featuring France and Brazil — and, oh boy, has it worked like a charm for England. Spain, the only true giant of the eight, went out in the round of 16 to Russia, thus leaving England a potential path to the final featuring Sweden and Croatia. The objective is clear for England: don’t mess this up, because you’ll almost certainly never get another chance like this. Also of note regarding England: Harry Kane could just about lock up the Golden Boot with another goal (or two), to pad his current 6-4 lead on Romelu Lukaku.

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Brazil vs. Belgium — meeting of the most impressive sides so far?

No one thrashed through their respective group quite like Belgium did — won all three games and finished with a +7 goal differential — and no one knocked off their round-of-16 foe quite as soundly as Brazil did — the Selecao beat Mexico by a score of 2-0, the only game of the eight to finish with a multiple-goal margin of victory. In that sense, it would be fair to say Brazil and Belgium have been the most impressive teams through their first four games. So, naturally, they’re set to face one another in the second quarterfinal on Friday. It’s a small feather in the cap of those who believe the World Cup should be re-seeded at the conclusion of the group stage.

[ MORE: Key battles in each World Cup quarterfinal match ]

Uruguay face France, without Cavani

Edinson Cavani scored both goals for Uruguay in their 2-1 victory over Portugal in the round of 16, but will now pay a steep price for doing so: Cavani, who alongside Luis Suarez forms arguably the best forward partnership at this World Cup, is expected to miss Friday’s quarterfinal clash with France on Friday. Cavani suffered a calf injury during the second half of the game against Portugal. Cavani (45) has scored more goals during his Uruguay career than anyone not named Suarez (53).

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(When) will the “upsets” stop?

While Belgium beating Brazil would only constitute a mild upset (compared to everything we’ve seen thus far), it would still signal the elimination of the next-to-last remaining pre-tournament favorite. The same goes for Uruguay versus France, though most would see that as more of a shocker than an upset. It’s possible that we could end up with a World Cup final featuring not a single team from outside the top 10 of the current FIFA rankings (Uruguay versus anyone from the other half), but more likely that we’ll see a final without a top-six side (France, who are currently ranked seventh).

[ MORE: World Cup quarterfinal predictions ]

What if the upsets don’t stop?

Speaking of upsets, Uruguay versus Belgium, and Russia versus Sweden — that’s a very possible final-four field, should anyone expect to waltz through their matchup on Friday or Saturday. While everyone is penciling in an England versus Croatia semifinal, and hoping to put England through to the final, if we have learned anything from this tournament, it’s that it would be very stupid to look past Russia and Sweden. Would it be the star-studded semifinal showdown everyone projected, or get excited for, before the tournament started three weeks ago? Certainly not, but it feels like an ending perfectly befitting this particularly crazy World Cup.

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