Zverev, Alcaraz, Garcia, or Azarenka: Which players have the most points to defend in Miami?

The Miami Masters 1000 will take place from March 19 to 30, 2025. Following Indian Wells, the tournament in Florida will welcome the top players from the ATP and WTA tours. But who has the most to lose?
On the men's side, the defending champion Sinner, absent due to suspension, will automatically lose 1000 points.
The finalist Dimitrov must defend 650 points. Medvedev and Zverev, on the other hand, could lose 400 points if they fail to reach at least the semifinals. The Spaniard Alcaraz can gain points if he reaches the semifinals (200 pts, quarterfinals).
On the women's side, Collins must defend her singles title (1000 pts), and Rybakina will need to secure another final (650 pts).
The 2024 semifinalists are Azarenka and Alexandrova (390 pts), and the French player Garcia will see her 215 points disappear if she doesn't qualify for the quarterfinals.