(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.  QUESTIONS:

Q1:
1. Whats the name of the 4th seed player?
2. Which player is listed as 4th seed?
3. What player is seeded 4th?
Q2:
1. What is Novak Djokovic's position?
2. Where is Novak Djokovic in the rankings?
3. What is Novak Djokovic ranked as?
Q3:
1. Where is Novak Djokovic ranked no. 1?
2. In what context is Novak Djokovic positioned at no. 1?
3. Where does Novak Djokovic hold a no. 1 ranking?
Q4:
1. How many seasons did Rafael Nadal win in the tournament?
2. In how many seasons was Rafael Nadal the tournament winner?
3. What was the number of seasons where Rafael Nadal has been the tournament champion?
Q5:
1. How many times did Rafael Nadal win in a row?
2. What was the number of Rafael Nadal's consecutive wins?
3. How many times was Rafael Nadal crowned champion consecutively?
Q6:
1. What was the score of Rafael Nadal's game?
2. What score was listed for a Rafael Nadal game?
3. What was one of Rafael Nadal's scores?
Q7:
1. What did Rafael Nadal say was a good feeling?
2. What did Rafael Nadal say made him feel good?
3. In his own words, what brought up Rafael Nadal's spirits?
Q8:
1. In what month did the game in Chile take place?
2. What was the month of the Chile game?
3. When was there a match in Chile?
Q9:
1. Did Rafael Nadal have an easy last year?
2. Was last year a breeze for Rafael Nadal?
3. Was last year smooth sailing for Rafael Nadal?
Q10:
1. Did Rafael Nadal feel stressed after the 44th victory?
2. Did his 44th victory make Rafael Nadal feel stressed?
3. Was Rafael Nadal feeling the heat in the aftermath of his 44th victory?
Q11:
1. Is Rafael Nadal currently on tour?
2. Is Rafael Nadal on tour right now?
3. At present, is Rafael Nadal on tour?
Q12:
1. Who is doing well like Rafael Nadal is?
2. Besides Rafael Nadal, who else is doing well?
3. Who has been successful lately, other than Rafael Nadal?
Q13:
1. What was Gregor Dimitrov's score?
2. What score did Gregor Dimitrov?
3. What was the score of a Gregor Dimitrov game?
Q14:
1. Who did Gregor Dimitrov win against?
2. Who did Gregor Dimitrov beat?
3. Who lost to Gregor Dimitrov?
