Here's a short story:

(CNN) -- It was deja vu for the Williams sisters at the French Open -- but not in a good way. 

A mouthwatering third-round clash between seven-time grand slam champion Venus and 17-time major winner Serena was ruled out when the former lost to unseeded Slovakian Anna Schmiedlova 2-6 6-3 6-4 in early play in Paris on Wednesday. 

Then hours later, Serena -- also the defending champion and world No. 1 -- fell to Spain's Garbine Muguruza 6-2 6-2, her worst ever grand slam performance. 

In 2008, the siblings were also defeated on the same day at Roland Garros, their least productive major. The last time it happened was at Wimbledon in 2011. 

An 18th grand slam singles crown for Serena would have tied her with legends Chris Evert and Martina Navratilova but the younger of the tennis playing sisters has now been upset in consecutive majors. 

Venus has been hindered by debilitating autoimmune disease Sjogren's Syndrome in recent years though she looked solid in her first round match against the promising Swiss, Belinda Bencic. 

The siblings join other big names who've already been upset at the tournament, including Australian Open champions Stan Wawrinka and Li Na, as well as Kei Nishikori and Caroline Wozniacki. 

Defeat for Serena meant it was the first time in the Open era that the top two women's seeds had fallen before the third round. 

"I don't think anything worked for me today," a dejected Serena told reporters at her post-match press conference. 

"It was one of those days. You can't be on every day, and, gosh, I hate to be off during a grand slam but it happens. It's not the end of the world.  (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: Who was won seven times?
Guess: Venus
Confidence: <appropriate level of confidence in this guess>

Question: Does she have a disease?
Guess: Yes.
Confidence: <appropriate level of confidence in this guess>

Question: What disease?
Guess: Sjogren's Syndrome
Confidence: <appropriate level of confidence in this guess>

Question: Is it contagious?
Guess: No.
Confidence: <appropriate level of confidence in this guess>

Question: What did she win seven times
Guess: Grand Slam
Confidence: <appropriate level of confidence in this guess>

Question: Who was it deja-vu for?
Guess: The Williams sisters
Confidence: <appropriate level of confidence in this guess>

Question: Where?
Guess: French Open
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: How many times has Serena won?

17