One of the most entertaining matches I've ever seen was Venus vs. Serena in Maimi in '05 (if memory serves me). It was great tennis, highly competitive and an emotional rollercoaster.
I think the suggestion that either one of them would tank it in a match is ridiculous. They're both way to competitive. Once either one is on-court, it's go time.
Maybe it's just the skeptic in me, but I highly doubt that "a huge Williams fan" would suggest such a thing.
"Fuck, fuck, fuck, fucking fuck, fuck, FUCK!" - Anastasia Myskina
"The noblest work of God? Man. Who found it out? Man." - Mark Twain
"Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats." - H.L. Menken