Novak Djokovic recognised his ongoing hamstring troubles are "not ideal" but said in "high-level professional tennis you have got to find a way".
The Serbian beat number 27 seed Grigor Dimitrov in straight sets in the third round of the Australian Open on Saturday, despite clearly feeling the hamstring injury that hampered him in his second-round match.
Djokovic was particularly struggling in the first set, though was able to win a tense tie-break 9-7, before going on to win the second and third sets 6-3 6-4 in a match that lasted over three hours.
"I went up and down with my leg, at times it was feeling good and at times not so good, so I had to handle that," Djokovic told Eurosport after the victory.
"Also Grigor is in form, played well for over three hours and three sets, I can't even imagine if I'd lost one of those sets what the length of the match [would have been].
"[I was] just fortunate to find the right shots in the right moments, I thought the double break in the third would be enough but from that moment he was locked in, he didn't miss much, he made me play, made me run all over the place, he read my serves very well, so it was just an incredible battle in the end."
Djokovic received a medical timeout at the end of the first set, which seemed to do the trick as he looked more comfortable in the second, and he broke twice early in the third before a brief Dimitrov fightback, which was ultimately in vain.
"It's movement," he clarified about the injury. "A specific movement that just triggers so I prayed that it doesn't happen, but it happened in the match so I had to deal with it, I had to call the physio and get the pills in my system and it helps so far.
"Not ideal but somehow finding a way. This is high-level professional tennis and you've got to find a way."
The fourth seed faces Australian Alex de Minaur in the fourth round.