Yes, that is right. Sinner would then become number 2, while Medvedev would remain at numberr 4.
Sinner has won the last 5 matches against Medvedev. He is probably becoming his favourite opponent. But Medvedev also made some mistakes in this match that he does not normally make. But Sinner also played very confidently and sovereignly.
Fun fact, before been able of beating Medvedv for 5 times, he lost the previous 6.
The young player is not more mature, is still superyoung but I think that for the next 10 years we may have a new era of Nadal-Federer with Alcaraz and Sinner.
The reign Novak is starting to collapse.
We may have Rune also soon at their level but for now he is a step below.
I find it hard to give creditability to the H2H like Medvedev v Sinner for example,
Medvedev is longer playing tennis and Sinner has really entered a new phase of
his career. Its will be more interesting to see the H2H between Sinner and Alcaraz
or Rune because they are all starting their career's around the same time, just my opinion!
Myself anf my Wife are big fans of Sinner and for me also Medvedev but Dimitrov has
been a real sensation over the last couple of weeks and we both agree that we are happy
for either to win, should be a mightily entertaining final.