Identify the incorrect word in the sentence: "Each of the players are practicing their skills."

In the sentence "Each of the players are practicing their skills," the word that is incorrect is "are." The subject of the sentence is "Each," which is a singular pronoun. When using "each" as the subject, the verb must also be singular to maintain subject-verb agreement. Therefore, the correct verb form should be "is" instead of "are."

The rest of the sentence remains consistent with standard grammatical structure. "Each" indicates that we are referring to individual players separately, which reinforces the need for the singular verb form. Using "are" creates an inconsistency in the subject-verb agreement, as it suggests a plural subject, which "each" does not represent.