WIMBLEDON -- Middle Saturday at Wimbledon is the last chance the remaining players have to vie for their place in the second week.
The two have met four times previously, with Djokovic taking three of those, but Edmund won the most recent contest at the Madrid Open in May -- albeit on the red clay.
"That definitely adds to my confidence," Edmund told ESPN. "But this is a new match and it starts again from 0-0."
This is already the young Brit's most successful Wimbledon campaign, but his in-form-again opponent -- a three-time Wimbledon champion -- is looking dangerous on the grass.
Over on the women's side of the draw, the seeds are dropping like Wimbledon's flying ants. But the No. 1 seed stands firm -- Halep faces Hsieh on Saturday to keep alive hopes of a second successive Grand Slam title.
The two have met just once before, at Cincinnati back in 2013, when Halep won in three sets.
The Romanian has looked entirely focused and is yet to drop a set at this year's Championships.
Taiwan's Hsieh overcame world No. 29 Anastasia Pavlyuchenkova in Round 1 and cruised through her second matchup -- dropping just six games.
No. 2 Rafael Nadal vs. Alex de Minaur (first meeting)
Most 19-year-olds would be perturbed upon realising their third-round opponent was 17-time-Grand-Slam-winning Nadal, but not De Minaur.
After a brilliant Round 2 win over Pierre-Hugues Herbert the young Australian told the media: "It's an experience I am really looking forward to."
And why not? The teenager will now walk onto Centre Court at the All England Club when he faces two-time champion Nadal.
As if that wasn't enough to keep De Minaur happy, Nadal himself has been singing the youngster's praises, saying: "He's good. He's young. He's dangerous. Good player. So let's see. Is a good challenge for me."
If Nadal thinks that then it's good enough for us. We're tuning in.
This has all the makings of another great match. Kerber and Osaka have faced each other three times -- all in 2017.
Former world No. 1 Kerber has claimed the most recent two -- in Beijing and Tokyo -- while Osaka was victorious when they met in the first round of the US Open.
Kerber appointed Wim Fisette -- formerly Johanna Konta's coach -- in November 2017, and has seen a run of good form since. Meanwhile, powerful Osaka has evolved as one of the tour's biggest hitters this season, although her second-serve stats sometimes let her down.