Feyenoord–Como has me watching the space after Como's long spells on the ball. Feyenoord beat AZ with less possession while creating the better recorded chances; Como held far more of the ball against Roma but could not turn it into a goal. If Como keep the ball here, Feyenoord's challenge is to win it in places that allow an immediate attack. Como's is to make that possession move Feyenoord before the turnover arrives.
In the recorded AZ match, Feyenoord had 43% possession and 2.15 xG to AZ's 0.98. Como had 66% possession and 19 shots in its scoreless draw with Roma, though Roma played with ten men from early in the second half. Different opponents and a red card make these imperfect comparisons; the opening exchanges should tell us more than either raw possession number.