As he stretched one record, Ronaldo claimed another – becoming the first man to score 10 hat tricks in international football.
His three goals bring the 36-year-old’s career total for club and country to an incredible 58 hat tricks, and as has been the case with many of them, he was helped along the way by a penalty.
Ronaldo opened the scoring on the spot after just seven minutes – scoring his penalty in the center after a foul on Bernardo Silva.
The Manchester United striker lined up for his second penalty of the game minutes later, dusting himself off after being knocked down by Luxembourg goalkeeper Anthony Moris.
The referee ordered Ronaldo to retake his second successful penalty for encroachment, but he comfortably extended Portugal’s lead to two on his second attempt.
Manchester United team-mate Bruno Fernandes added a third goal just before the 18-minute mark as Portugal threatened to score a cricket goal, but Luxembourg held on to keep the three-sided gap until that Joao Palhinha comes home from a corner halfway through the second half.
With four minutes remaining in regulation time, the original designer picked up the movement for himself – celebrating in his usual style after completing his hat trick via a close range header.
The victory puts Portugal one point behind Group A leaders Serbia with one game less. The two teams hold an unattainable lead over the rest of the squad and face each other in their final qualifying match.