Cardiff's home pressure can force West Ham to defend the next ball after an initial clearance. West Ham can answer with a quick central steal and wide delivery, making the first response after a goal important. Porto's press poses a different problem for Napoli's first pass and wide defensive jobs. Napoli have a direct outlet through Politano or Lang, but the next accurate attempt after that outlet should decide whether the attack sustains itself.
Tanner, Moylan and Salech give Cardiff more than one way to finish a home pressure spell. West Ham have scored heavily away, yet the Lincoln total masks tighter work at Swansea, and their recent defensive second contacts have offered opponents another arrival. Fish and Ng both played Cardiff's latest match but carry current fitness concerns; Bielik missed the last two. I am siding with Cardiff to make its home entries count and keep answering West Ham's attacks.
Di Lorenzo and Olivera played Napoli's latest Juventus match and are newly absent, while Lobotka was lost recently. That puts extra weight on Gilmour's first pass and the wide defensive work expected from Politano and Lang. Porto can press those assignments, then use Pepê and Veiga for an initial chance and another arrival; Napoli managed only one accurate shot after Juventus struck. That is why I am siding with FC Porto to find the decisive follow-up.