It is very difficult in this case to determine the outcome of the Quarterfinals. So lets look at the upcoming four matches:-
Djokovic vs Hurkacz
There is still a question about match-fitness on the part of Djokovic. After an absence of near to 4 months from tennis Djokovic tried on three occasions to make a comeback to tennis on three occasions and in all three cases was beaten badly by -
* a qualifier in the hard court Dubai tournament in the quarterfinal of that series;
* Davidovich Fokina in Monte Carlo round 2; and
* Rublev in the final in Belgrade - in fact he was disgraced by Rublev losing 6-2, 6-7 and 6-0 in the final.
The above indicated the absence of match-fitness by Djokovic. Unfiotutely he only had one game in Madrid thus far - namely against Monfils - and even though he won convincingly in that game it must be borne in mind that Monfils is not a top 20 player anymore, while Hurkacz at 14 is. Hurkacz's record this year was not convincing and compare to 2021 he dropped in the rating. He surprisingly had a narrow victory against Davidovich Fokina who would have had a good chance to beat Djokovic.
In the end I believe that Djokovic will have a chance to beat Hurkacz - but with his record this year he is no certainty. So no prediction is the really possible.
Nadal vs Alcaraz
Nadal started 2022 very well - winning 3 tournaments being off the field for more than a month due to injury. After his return from injury beat the dangerous Kecmanovic 6-1 and 7-6 and the second set result bothers me/ Against Goffin - a player not in the top 40 grading anymore he won against Goffin. Fact in that match-up Goffin has had a number of match points in the third set he could not convert.
So far Nadal beat Alcaraz twice - once in Madrid in 2021 on the day Alcaraz was 18 years old in May 2021 and once this year in Indian Wells - that went to a three-setter. However since Madrid last year Alcaraz has risen to the number 9 ranking in the world by winning in three tournaments this year alone - two of those being played on clay.
Even though Alcaras struggled against Norrie - he still beat him - and considering that Norrie is a much better player than Goffin - the bookmakers believe that Alcaraz is the favorite to beat Nadal and based on what happened yesterday I think that Alcaraz is near to a certainty to win today.
Tsitsipas vs Rublev
Another match rather difficult to predict. Tsitsipas is the favorite to beat Rublev - but will he really win? The two players played each pother 9 times since 2019 and surprisingly Rublev won 5 of the matches they played each other. On clay over the last 18 months Tsitsipas beat Rublev 2-1.
Rublev is a problem player and it depends on which Rublev turns up to play. His form last year was atrocious and this year is much better. If he plays again like he did against Djokovic in Belgrade Rublev can beat Tsitsipas. However, Tsitsipas is better playing on clay and is the bookmakers favorite to win - but a firm prediction of the outcome of this match is really problematic.
Zverev vs Auger Aliassime.
Zverev is the defending champion in Madrid - he went up drastically in the ratings last year - but thus far this year showed zilch of the form he did last year. The only time he played Auger-Aliassime this year he lost against him .
Zverev has won no tournaments this year thus far and his form was at best not that good, shile Auger-Aliassime beat Rublev i8n the Amsterdam Final in Mzrch after Rublev self-destructed.
Not sure o0f any6 prediction in this case. . . .