FC Porto will visit Real Betis on Wednesday, October 14, in the second matchday of the Champions League league phase, and they arrive with a serious problem at the back. Coach Francesco Farioli has only one recognized central defender available for the trip, the former Arsenal man Jakub Kiwior. That is a defensive crisis for a side that otherwise looks in fine form.

Porto's form is exactly what makes the injury situation notable. They lead the Portuguese Primeira Liga with a perfect record through the first seven rounds, and in their most recent outing they beat Benfica 3-1. This is not a struggling team stumbling into a European fixture. It is a table-topping side with one specific, glaring vulnerability heading into a match against a Betis team that has been shooting at a ferocious rate this season.

When the Opponent Has One Hole

Every coach eventually faces a version of this scenario. You scout the opponent and find they are strong almost everywhere but thin in one position, often because of injury. The temptation is to plan an elaborate game plan. The better move is usually the simpler one: identify the weakness and design your attack to keep testing it.

With one natural center back, Porto will have to improvise a partner, likely a full back moving inside or a midfielder dropping. Those makeshift pairings tend to struggle with two specific things: defending crosses and balls into the box, and communicating on who picks up whom. A team like Betis, built to generate a high volume of shots and deliveries, is well suited to punish exactly that.

The Session You Can Run

You do not need Champions League opposition to teach this. Set up your team to attack a defense that is short a center back and watch how the improvised pairing cracks. Play a small-sided game where the defending team is deliberately understaffed in the middle and reward the attackers for getting bodies into the box on crosses. Your players learn to recognize a mismatch and hunt it rather than passing the ball sideways in front of it.

The scouting habit is the bigger takeaway. Teach your older players, U15 and up, to notice which opponent is filling in out of position and to target that seam. A defender playing an unfamiliar role is a defender making decisions half a beat slow. Betis will spend the next three weeks planning to exploit exactly that, and your team can learn to think the same way. Kickoff for the Betis match falls in the afternoon on the US East Coast, a rare midweek European tie you can actually watch with your players and dissect together.

For the American coach, an opponent's injury news is not gossip. It is a scouting input. The clubs that win in Europe read these medical reports and adjust their game plans within hours. Your team can build the same instinct on a Tuesday night training field.