World number one Novak Djokovic believes that his performances are getting better following victory over Andreas Seppi at the Dubai Tennis Championship.
The Serb booked a semi-final date with fourth seed Juan Martin del Potro after disposing of the Italian 6-0 6-3 in the United Arab Emirates.
"I'm pleased that it was an even better performance than in my first two matches," Djokovic told reporters.
"I'm elevating my level. Hopefully I can sustain that."
The other semi sees Roger Federer take on Tomas Berdych.
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