Liverpool traveled to face the dangerous Bournemouth side as the Reds looked to add up to their lead at the top of the Premier League.
Despite the Cherries holding on well at the beginning, Oxlade-Chamberlain scored for Liverpool in the middle of the first half.
Naby Keita then scored the second, after a beautiful assist by Mohamed Salah.
This effectively ended the match before the half-time.
After the second half started, Keita returned the favor, assisting Salah to seal the match at 3-0 for the Reds.
This puts Liverpool 11 points ahead of Leicester, and 13 ahead of Manchester City.