Diogo Costa vs William Saliba
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When comparing Diogo Costa and William Saliba in the 2025/26 season, it's clear both players bring elite-level quality to their respective teams. Diogo Costa represents FC Porto in the Liga Portugal, while William Saliba plies his trade at Arsenal in the Premier League.
Across our six core technical attributes, Diogo Costa leads in 4 out of 6 categories. Diogo Costa's strongest suit is dribbling (88), while William Saliba excels in defending (87).
On the trophy front, both players share an equal collection of 2 major honors. Silverware remains one of the most telling indicators of a player's ability to perform in high-pressure moments.
From a market value perspective, William Saliba is currently valued at €80M versus Diogo Costa's €45M. This gap is significant and reflects factors including age (26 vs 25), current form, and contract situation.