This is the 1871st most frequent Polish word.
lewandowskiego
"Lewandowskiego" is the genitive singular form of "Lewandowski," a Polish surname, often meaning "of Lewandowski" or "Lewandowski's."
The word 'Lewandowskiego' is used in its genitive case, denoting possession related to Lewandowski, indicating that the match belongs to or is associated with him.
Widziałem mecz Lewandowskiego wczoraj.
I watched Lewandowski's match yesterday.
Here, the word 'Lewandowskim' is in its instrumental case, indicating the person with whom the action of talking occurred.
Rozmawiałem z Lewandowskim na konferencji.
I talked with Lewandowski at the conference.
In this sentence, 'Lewandowskiego' is again in the genitive case, used to specify possession or relation regarding the photo.