The underlined phrases that are participial phrases are,
Tired from practice, the quarterback returned to the locker room.
The volleyball team won the match, moving on to the state tournament
Participial Phrases are verbal phrases that function as adjectives. They are formed by a verb with an -ed ending, Past Participle, or -ing, Present Participle, ending. They modify a noun or a pronoun.
To make sure it is a Participial Phrase try to take it away from the sentence. If what remains is a complete thought then it is a Participial Phrase modifying a noun or a pronoun.
