Brett Hemmings/Getty Images
By Courtney Nguyen
January 15, 2015

Introducing Instant Replay, a recap of the best highlights, GIFs and photos as we move into the business end of this week's tournaments. 

Roger Federer and Lleyton Hewitt played tennis on speedboats in Sydney simply because they could.

[youtube=https://www.youtube.com/watch?v=XVV_38b4ph4]

​Later that night, Federer played Hewitt in a tennis exhibition. Clarification: Cruz Hewitt.

[youtube=https://www.youtube.com/watch?v=aqD4sYmxcwo]

Highlights from a fun night of tennis between Federer and Hewitt the Elder:

[youtube=https://www.youtube.com/watch?v=t2foyu5iG6w]

Rafael Nadal took his turn with the new "Fast 4" format Tennis Australia is pushing. It comes with a hot pink plush throne:

PAUL CROCK/AFP/Getty Images

Nadal helped open up the newly roofed Margaret Court Arena with a tweener:

[youtube=https://www.youtube.com/watch?v=Ju6vZfqK-eQ]

And commemorated the night with a selfie:

[youtube=https://www.youtube.com/watch?v=w_i7F_hwyk0]

Juan Martin del Potro made his much-anticipated return to the tour at the Sydney International. Del Potro defeated Sergiy Stakhovsky in his first match. Then he cried:

[youtube=http://youtu.be/I-zihW2jaEM]

Nice reflexes, Staks:

[youtube=https://www.youtube.com/watch?v=KPNBYohEnpk]

Nick Kyrgios started his season with a 6-1, 6-7 (6), 7-6 (5) loss to Jerzy Janowicz. He's still rockin' the pink Beats.

Brett Hemmings/Getty Images

Angelique Kerber defeated Daria Gavrilova 6-7(6), 7-6(2), 6-3 in a match that ended at 3:10 a.m. local time in Sydney.  

[tweet=https://twitter.com/Daria_gav/status/555049313806462976]

[tweet=https://twitter.com/WTA/status/555034911284133890]

[tweet=https://twitter.com/AngeliqueKerber/status/555047074715430915]

Highlights from the late-night (early morning?) final game:

[youtube=https://www.youtube.com/watch?v=LOyOK78k4SM]

Federer practiced his behind the back moves.

Vince Caligiuri/Getty Images

Maria Sharapova hung out with NERVO while in Melbourne.

More Sharapova selfies.

Quinn Rooney/Getty Images

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