Novak Djokovic's coach, Andre Agassi, says the Serb can improve even further as he returns to the game from an injury layoff.
The eight-time Grand Slam champion said that with Djokovic's previous accomplishments, nothing less than winning "is going to feel like success for him."
The same goes for Agassi. "Every time he steps on the court I think he can win," he told Australian press. "I fully expect him to do that. I fully expect to be responsible for him not doing it if he doesn’t."
The 30-year-old is scheduled to return at the exhibition event at Abu Dhabi, and then play at the Australian Open, a tournament he has won six times. But rather than practice in between, he could also add an ATP event to get more matches.
Djokovic has not played since retiring with an elbow injury at Wimbledon, and has been doing physical training but not yet hitting regularly. Agassi noted, though, that the two had "been on the phone constantly" and would be training together in the next few weeks.
"I’m spending time with him on the off-season," he said, saying his role is going to include "decisions that are going to have a real substantial impact on his game, both from how he thinks on the tennis court, to tools that I’m attempting to give him."
"But I expect him to get better," Agassi added.
Agassi began working with Djokovic just before the French Open, and will attend the Grand Slams and some other events with the Serb. Djokovic is also looking for a second coach to travel with him on a regular basis.
Djokovic has dropped to No. 12 in the rankings.