It was some honestly unexpected great play by the GOAT. What was particularly surprising was how well he returned against players with strong first serves and hold games after a terrible return performance vs. Albot.
@Gary Duane mentioned his return points won took a big jump and he seemingly was in every other return game.
43.4% Return points won vs. Isner
44.8% Return points win vs. Shapo
52%! Return points won vs. KAndy
39.2%Return points won vs Medvedev
43.2% Return points won vs. Kraijinovic
36.6% Return points won vs. Albot
5 out of his top 9 return performances were in Miami this year (vs. Borna, Gojo, Edmund, and Kohli the others), basically all Miami matches other than the Albot one.
As
@Gary Duane mentioned, his return gsme at the AO was pretty bad as he won only 34% of return points. Miami is going to be around 42-43%, Djokovic and Nadal Return points type numbers.