(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. 

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"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. 
How far apart are Novak and Marko in rank?
What sport do they play?
What is their relationship?
Which one is the better player?
How far about is their age?
Who witnessed Marko's lose?
Who did he lose too?
Where is he from?
Is Novak a great player?
What big match has he won?
When?
How did the older brother feel about watching?
What is the pressure his brother faces?
What kind of card did he get?
What rank is Marko's brother?
Where?
Does he have mixed feelings about his brother's success?
Does Novak have failth in his brother?
What does he need to do to get better?
on what?
868 places
At 20, Marko is four years younger, and 868 places further down the rankings
unknown
unknown
they're brothers
Djokovic senior was on hand to watch his brother's elimination
Novak
At 20, Marko is four years younger, and 868 places further down the rankings
four years
At 20, Marko is four years younger
Djokovic senior
Djokovic senior was on hand to watch his brother's elimination
Andrey Golubev
Djokovic senior was on hand to watch his brother's elimination, at the hands of Russian qualifier Andrey Golubev
Russia
Russian qualifier Andrey Golubev
yes
Novak is at the pinnacle of his sport
the Australian Open
winning the Australian Open
in January
 winning the Australian Open in January
it was tough
 it was tough to watch Marko's 6-3 6-2 reverse. 
Djokovic surname,
"He has to face the pressure of having the Djokovic surname,
a wild card
But I was happy my brother got a wild card.
first
As for Marko, he said there were plenty of positives and negatives to being the brother of the world's No. 1 player.
in the world
the world's No. 1 player
yes
As for Marko, he said there were plenty of positives and negatives to being the brother of the world's No. 1 player.
yes
When he is able to focus on that and not on his doubts he can become a world-class player."
focus
When he is able to focus on that and not on his doubts he can become a world-class player." 
his game
"He's trying to fight with his mind more than with his game. When he is able to focus on that