The sentence that is capitalized correctly is "Coach wants me to organize the team dinner," said Derrick."
We need to capitalize "coach" because it is the first word in the sentence. In the future, remember that specific names, for example Couch Carter, would be capitalized. However, in a generic sentence, like "The coach wants me to organize the team dinner," "coach" would not be capitalized.
"Said" should not be capitalized because it is not the start of the sentence.
Derrick should be capitalized because it is a name.
