Brengle nervously chats with coach while upsetting Serena

The magic of video has given us a glimpse inside Madison Brengle's huge upset of Serena Williams on Wednesday at the ASB Classic in New Zealand. Brengle, talking to her coach Nicole Melichar, seems nervous that Williams might be "surprised how bad I am."

That may have turned out the other way around. Williams was greatly disappointed in herself after 88 unforced errors helped cost her the match.