Learn German: Ist Fritz' nasses Trikot denn hier? - Is Fritz's wet jersey here then?

In German, when a proper noun ends in an s-sound (like -s, -ß, -x, or -z), you don't add an -s for the genitive (possessive) case. Instead, you just add an apostrophe. Since Fritz ends in a z-sound, it becomes Fritz'.

Is Fritz' pronounced differently from Fritz?

No, they sound exactly the same. The apostrophe is strictly a written rule to show possession. In spoken German, since you cannot hear the apostrophe, people often use the alternative phrasing das nasse Trikot von Fritz to make the possession clearer.

Why does the adjective take the ending -es in nasses Trikot?

When a possessive name like Fritz' comes before a noun, it replaces the normal article (like das). Because there is no article to show the gender and case, the following adjective takes the strong ending. Trikot is a neuter noun in the nominative case, so the strong ending is -es.

Why is denn used here if it normally means 'because'?

In this sentence, denn is a modal particle, not a conjunction. When used in questions, it adds a tone of casual curiosity or keeps the conversation flowing. It translates best to 'then' or 'anyway', as in 'Is his jersey here, then?'