Which one is incorrect?

A-Each of the players have a locker.
B-There go the members of the cast.
C-Neither of the reports is finished.
D-Either of the clients is angry.

To determine which option is incorrect, we need to evaluate the subject-verb agreement in each sentence. The subject and verb should agree in number, which means that a singular subject should have a singular verb, and a plural subject should have a plural verb.

A- "Each of the players have a locker."
In this case, "each" indicates that we are talking about individual players, so the verb should be singular.
The correct sentence should be: "Each of the players has a locker."
Therefore, option A is incorrect.

B- "There go the members of the cast."
In this sentence, "the members" is a plural subject, so the verb "go" is correct.
Therefore, option B is correct.

C- "Neither of the reports is finished."
In this sentence, "neither" indicates that we are talking about two reports, which is a plural subject, so the verb "is" is incorrect.
The correct sentence should be: "Neither of the reports are finished."
Therefore, option C is incorrect.

D- "Either of the clients is angry."
In this sentence, "either" suggests a choice between two clients, making it a singular subject. Therefore, the verb "is" is correct.
Therefore, option D is correct.

To summarize, the incorrect sentence is:
Option A: "Each of the players have a locker."