Samsunspor produced a stunning upset at home, dismantling Galatasaray 4-1 in a result that defied the pre-match expectations. Yusuf Akgun's ninth-minute finish gave the visitors an early lead, but Marius equalized within thirteen minutes to spark a remarkable Samsunspor revival. The hosts seized control in the second half, with Cheikh Ndiaye doubling their advantage in the 57th minute before Marius added a third from close range in the 71st. A red card to Günay Güvenç in the 63rd minute shifted the contest decisively in Samsunspor's favor, and Ndiaye's second of the evening sealed a comprehensive victory.

Our pre-match model predicted a comfortable 3-0 win for Galatasaray, assigning them an 88 percent probability of victory. The forecast was built on expected goals data that heavily favored the Istanbul side—Galatasaray's 4.47 xG to Samsunspor's 1.1—alongside form and ELO ratings that reflected their stronger recent standing. The prediction was entirely wrong on both result direction and scoreline. What unfolded instead was a display of clinical finishing from Samsunspor, who converted limited opportunities into goals, while Galatasaray's considerable statistical advantage translated into just a single opening-period strike.

The dismissal of Güvenç certainly altered the match's complexion, but the underlying issue was Samsunspor's intensity and efficiency in the attacking third, particularly through Marius and Ndiaye. This result serves as a reminder that expected goals models, while useful, capture only part of football's picture—execution and in-match momentum remain difficult to quantify.