The son of former Leeds United midfielder Alf-Inge Haaland grabbed his 10th goal in nine games with the deftest of touches in Dortmund's behind-closed-doors game against Schalke, who are managed by former Huddersfield Town boss David Wagner.
Borussia Dortmund led 2-0 at half-time in the derby game, which is being played in a vacuous atmosphere in Signal Iduna Park without fans in place, and went further ahead after the break.
Substitutes are sitting apart on the benchs, wearing masks, and game protocols like pre-match handshakes have been abandoned.
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The Bundesliga is the first professional league to resume the season after the nationwide lockdown due to the ongoing Coronavirus pandemic.