Although he failed to defend his Australian Open title under new coach Boris Becker, Novak Djokovic is still confident that the German can help him develop greater mental toughness and help him produce his best tennis in majors. The former world No. 1 has not won a Grand Slam title in his last four attempts and was upset by eventual champion Stanislas Wawrinka in the Australian Open quarterfinals last month.

"We're not significantly changing anything in my game... no one-handed backhands, stuff like that," Djokovic told reporters in Dubai. "The biggest part he can contribute is the mental approach. That's one of the reasons Boris is here, because of the big matches and Grand Slams. I felt I dropped two or three titles in the last two years I could have won. I felt there was a mental edge I was lacking."