 On February 24, 2018, in a 97–90 loss to the Utah Jazz, Barea hit his 500th 3-point field goal as a Maverick, becoming only the eighth player in franchise history to reach 500 made 3-pointers.On March 22, 2018, he had a season-high 23 points during a 119–112 loss to the Jazz.The game marked his 567th for the Mavericks and broke a tie with Mark Aguirre for the eighth-most in team history.