Jurgen Klopp was left annoyed by a question asked at his post-match press conference after seeing Liverpool suffer a dire defeat at Wolves.
Van Der Merwe crossed twice for Scotland as they snatched a third successive win over England.
The England midfielder turned in a fine display as the Hammers fought back on Tyneside.
The Brooklyn Nets will be without wantaway star guard Kyrie Irving for their clash with the Washington Wizards.