Here's a short story:

(CNN) -- After a difficult past year, Rafael Nadal is back where he feels most comfortable -- but his rivals are battling to find form ahead of the French Open. 

While the Spaniard cruised into the quarterfinals of the Monte Carlo tournament he has won for the past eight seasons, world No. 1 Novak Djokovic again had to come from behind to earn his place while Andy Murray suffered a crushing defeat that will demote him to third in the rankings. 

Fourth seed Tomas Berdych and No. 5 Juan Martin del Potro also crashed out Thursday to thin out the competition for Nadal as he continues his winning return to the ATP Tour following longterm knee problems. 

His 6-2 6-4 rout of German 16th seed Philipp Kohlschreiber was his 16th successive victory this year following a defeat in the final of his comeback event in Chile in February. 

"I feel more relaxed, yes. I had some uneasy moments during the past year," Nadal said after his 44th consecutive win at the clay-court event, which set up a clash with 21-year-old Bulgarian Gregor Dimitrov. 

"Now I'm back on the tour. Just being here is good news. And winning matches -- I say it every day, but winning every match is very important to me today. Every time I have the chance to go on court and play well, feel competitive, is a really good feeling." 

Dimitrov is also on a roll, having followed up his opening victory over world No. 10 Janko Tipsarevic by beating Germany's Florian Mayer 6-2 6-4.  (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 is fourth seed?
Guess: Tomas Berdych is fourth.
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: What number is Juan Martin del Potro?

He's seeded 5th.