In the women's event, Japan's Naomi Osaka hopes to move a step closer to a maiden Wimbledon crown.AFP Sport looks at the quarter-final action on the ninth day of the tournament (x denotes seeding):Novak Djokovic (SRB x7) v Felix Auger-Aliassime (CAN x3)Head to head level at 1-1-- At an age when most of his contemporaries have long since retired, Djokovic remains at the cutting edge in his quest for success.Amassing 24 Grand Slam titles and countless other prizes across the world hasn't sated the 39-year-old's thirst for more silverware.Djokovic hopes to equal Roger Federer's record of eight Wimbledon singles titles by winning a record 25th major.That would make him the oldest man to win a Grand Slam in the Open era.But the path to tennis immortality won't be easy, with Canadian rising star Auger-Aliassime -- aiming to make his first Wimbledon semi-final -- lying in wait before a potential heavyweight encounter against defending champion Sinner.No wonder Djokovic is turning to technology to keep his body in peak condition."I think the amount of time I spend recovering nowadays is more than I have ever done. It's just the demands of the body nowadays - more wear and tear," he said."Throughout my career, I always try to look what can give me an edge. What's the best recovery, wellness technology out there."From hyperbaric chambers, to cryo chambers, to cold immersions, to red light therapy to pulse electromagnetic therapies, to... There's a lot of things that I have used."Naomi Osaka (JPN x14) v Karolina Muchova (CZE x10)Head to head level at 3-3