But it was 2 sets and a break, not just a one-break lead.
True, Pernfors was no Lendl or Becker, but losing a lead of 2 sets to love, plus up a break, and as Mustard said, also up 3-0 in the 4th, is not something a player ranked #20 in the world (which he was at the time of that match) should...