Isaiah Jones scored twice – summer signings Rav van den Berg and Alex Bangura were the other scorers as Middlesbrough thrashed their visitors at the Riverside.
Stuttering Preston’s defeat was their sixth in 10 matches, another blow for the Lancashire side after Cardiff scored twice in stoppage time to beat them on Saturday.
The defeat means they dropped out of the play-off places and just one point better off than Boro, whose win moved them up to ninth in the Championship table, three points off the play-off spots.
Bangura, 24, joined the club on the 1st of September, 2023, on a four-year contract for £1 million.
@alexbanguraa bags first @Boro goal in win over Preston— Alie Bittar (@bittar32) November 30, 2023
Sierra Leone defender Alex Bnagura scored his first goal for Middlesbrough as they enjoyed a resounding victory 4-0 over Preston.#FSLNews #FSLMedia #SierraLeone #PlayersAbroad pic.twitter.com/jNLWJ93J5z