Robert Lewandowski scored a hat-trick as Bayern Munich obliterated Hamburg SV 8-0 on Saturday to stay five points clear at the top of the Bundesliga and equal their opponents’ heaviest ever league defeat.

Lewandowski, who has now scored 19 league goals this season, struck twice in the first half and slotted home a third in the 54th minute, after Arturo Vidal had put the hosts ahead.

Hamburg, who went into the fixture unbeaten in their last three games, had been confident they would not be the punch bags of past encounters between the sides, having also lost 8-0 in Munich two years ago.

But they looked as though they had frozen when they conceded a fifth goal, scored by David Alaba, in the 56th and the substitute Kingsley Coman scored twice more within five minutes shortly afterwards.

Arjen Robben then struck on the break late on as Hamburg capitulated to equal their heaviest defeat in the Bundesliga.

Elsewhere RB Leipzig kept to within five points of the leaders after beating Cologne 3-1 to raise their tally to 48 points.

Pierre-Emerick Aubameyang ended his 471-minute goal drought, scoring twice as Borussia Dortmund tightened their hold on third place with a 3-0 victory at Freiburg.

Dortmund are three ahead of Hoffenheim who play Schalke 04 on Sunday.