Read the text and answer the questions.

(CNN) -- They share the same surname -- Djokovic -- but for now at least, that is where the similarity ends.

Novak is at the pinnacle of his sport and was the center of attention in Dubai after completing in his first victory since winning the Australian Open in January.

At 20, Marko is four years younger, and 868 places further down the rankings -- and on Monday he slumped to an opening-round defeat in front of his elder sibling.

Djokovic senior was on hand to watch his brother's elimination, at the hands of Russian qualifier Andrey Golubev, but says that Marko can make his mark in the upper echelons of the game.

Del Potro too strong for Llodra in Marseille final

"He has to face the pressure of having the Djokovic surname," Novak said in quotes carried by AFP.

"He's trying to fight with his mind more than with his game. When he is able to focus on that and not on his doubts he can become a world-class player."

He admitted it was tough to watch Marko's 6-3 6-2 reverse. "It was difficult for me to sit courtside," he said. "I have not done it too much.

"At least when I'm playing I know what's going on. But I was happy my brother got a wild card. He is not at his level yet, but he's getting there."

As for Marko, he said there were plenty of positives and negatives to being the brother of the world's No. 1 player.

1. How far apart are Novak and Marko in rank?
2. What sport do they play?
3. What is their relationship?
4. Which one is the better player?
5. How far about is their age?
6. Who witnessed Marko's lose?
7. Who did he lose too?
8. Where is he from?
9. Is Novak a great player?
10. What big match has he won?
11. When?
12. How did the older brother feel about watching?
13. What is the pressure his brother faces?
14. What kind of card did he get?
15. What rank is Marko's brother?
16. Where?
17. Does he have mixed feelings about his brother's success?
18. Does Novak have failth in his brother?
19. What does he need to do to get better?
20. on what?
1. 868 places
2. unknown
3. they're brothers
4. Novak
5. four years
6. Djokovic senior
7. Andrey Golubev
8. Russia
9. yes
10. the Australian Open
11. in January
12. it was tough
13. Djokovic surname,
14. a wild card
15. first
16. in the world
17. yes
18. yes
19. focus
20. his game