Re: Lena and Dinara = 83 UE combined!
When comparing infamously bad semi-finals, the measuring stick is Kuznetsova vs Chakvetadze 2007 USO semi. I'm not sure how many unforced errors they committed in one match alone, but it was helleva lot.
Serena. Simona. Ana. Petra. Venus.
Clijsters, Henin, Dementieva, Davenport.
Martina Hingis - "No one else played like Hingis - no one could."