Australian Open 2015: Twitter Reacts to Day 10 Bracket Results, Scores, Winners

The semifinals on both sides of the 2015 Australian Open draw are now set. There are four players left in each bracket chasing the first major title of the year. Most of them are well-known and all of them are seeded except one: Madison Keys.

She joins the likes of Serena Williams, her semifinal opponent, Maria Sharapova, Novak Djokovic and Andy Murray just two wins away from a Grand Slam title. That's exclusive company and it's no fluke, which is a positive sign for the future of American tennis on the women's side.

Day 11 brings about both women's and the first men's semifinals. It will start to set the stage for this weekend's title matches. Before those clashes take over Rod Laver Arena, let's check out the results and some of the reaction from Day 10 at Melbourne Park.

Day 10 Singles Results

Round	Winner	Loser	Score
Women	-	-	-
Quarterfinals	Madison Keys	(18) Venus Williams	6-3, 4-6, 6-4
Quarterfinals	(1) Serena Williams	(11) Dominika Cibulkova	6-2, 6-2
Men	-	-	-
Quarterfinals	(4) Stan Wawrinka	(5) Kei Nishikori	6-3, 6-4, 7-6
Quarterfinals	(1) Novak Djokovic	(8) Milos Raonic	7-6, 6-4, 6-2

Day 10 Recap and Reaction

Wednesday marked a massive test for Keys. Going up against a resurgent Venus Williams, who's helped set the standard for American women over the past two decades, was not only a physical test but a mental one as well.

She responded tremendously. The 19-year-old rising star hit 34 winners as compared to just 10 for Williams and came up with three breaks on five chances in the third set. There were some minor hiccups, particularly in the second set, but she fought through nicely.

One factor to keep an eye on as she gets prepared to face the other Williams sister is a lingering thigh injury. It popped back up during the second set and she explained via Jim Caple of ESPNW that it was a scary moment.

"It was kind of an overwhelming moment. It was kind of scary," Keys said. "But luckily, I was able to catch it before I did any real damage to it. Luckily, the painkillers and adrenaline in the end kind of helped me get through it."

As for Williams, reaching her first major quarterfinal since 2010 is a great sign for the rest of the year. She's healthy and playing at a high level again. Andy Roddick says her presence is a positive for the sport as a whole:

Perhaps unsurprisingly her sister Serena played her most complete match of the tournament immediately afterward. Not because she wants to see Venus lose, of course. But playing each other has always been tough. If they both won on Wednesday, they would have faced off in the semis.

Williams played more freely as she easily cruised past Dominika Cibulkova in just over an hour. She hit 31 winners, 15 aces and broke four times in seven chances. It's about as close to a no contest as you see at this stage of a Grand Slam event.

ESPN Stats and Info passed along an interesting tidbit about her performance when reaching this stage of the Aussie Open in the past:

She's the favorite once again. In the other semifinal, Sharapova will take on fellow Russian Ekaterina Makarova. It sets up a guaranteed United States vs. Russia championship match. The only question is which players will be the representatives.

On the men's side, reigning champion Stan Wawrinka continued his quest to repeat with a highly impressive victory over Kei Nishikori. The No. 5 seed was simply overwhelmed by the heavy hitting of the Swiss star for most of the match.

Wawrinka has advanced beyond the quarterfinals of a major just once outside of Australia. He's seemingly found a comfort zone over the last few years in Melbourne, though. It will be interesting to see if he can carry those positive vibes all the way to another title.

Brian Phillips of Grantland summed up his play quite succinctly:

"

Wawrinka in full flight like this is one of the greatest sights in tennis.

— Brian Phillips (@runofplay) January 28, 2015"

The future is still bright for Nishikori. He's just learning how to handle the marquee matches at the business end of a Grand Slam.

Finally, the day wrapped up with Djokovic surviving an early push from Milos Raonic before advancing in straight sets. The top seed won the opening-set tiebreak 7-5. If that ends differently, he's probably got a much bigger battle on his hands.

The seven-time major champion entered the tournament with some question marks after dealing with an illness leading up to the event. There have been no linger effects. He's yet to drop a set while establishing himself as the player to beat.

Chris McKendry of ESPN highlighted a key reason for that:

He'll likely face a tougher challenge from Wawrinka. Even though Djokovic has won 16 of the previous 19 meetings, last year's meeting in this event resulted in an upset. The underdog won a marathon 9-7 in the fifth set before proceeding all the way to win the title.

That match will take the spotlight on Friday in Australia. Up first, Day 11. Along with both women's semifinal matches, Tomas Berdych and Andy Murray will face off for a spot in the men's championship match and an extra day off to boot.

Four days remain. Two champions will emerge.