Benfica became the first team since 1965 to score 10 goals in a Portuguese top-flight match as they thrashed struggling Nacional.
The Lisbon giants, who moved one point behind leaders Porto, led after 33 seconds through Alex Grimaldo.
Haris Seferovic scored twice but they were only 3-0 up at the break.
Jonas’ last-minute goal, his second of the game, made it 10-0 after strikes from Joao Felix, Pizzi, Ferro, Ruben Dias, Jonas and Rafa Silva.
Benfica were also the last team to achieve the feat, beating the now defunct Seixal 11-3 in 1964-65 season.