Top-ranked Novak Djokovic had to rally from a set down to beat 18-year-old Luca Van Assche 6-7 (4), 6-3, 6-2 at the Srpska Open on Wednesday.
Djokovic, coming off an early exit at Monte Carlo, was also down an early break in the decider before advancing to the quarterfinals at the clay-court tournament.
The 35-year-old Serb recovered from a slow start to drop just two points on his serve