Acuna's sprint speed per season:
2018 - 29.6
2019 - 29.3
2020 - 29.1
2021 - 29.4
2022 - 28.5
2023 - 28.0
2024 - 27.6
Acuna did not steal 70 bases last year due to elite speed. He no longer has elite speed, and the knee injury looks to have triggered a steepening of the aging curve. Therefore, citing SBs totals as some sort of gauge for knee health/strength is pointless.
Acuna's ISO in 2022 was .148 when his sprint speed was 28.5.
Acuna's ISO in 2023 was .258 when his sprint speed was 28.0.
Acuna's ISO in 2024 is 0.90 while his sprint speed is 27.6.
Therefore, there appears to be no correlation between his ISO and his SB totals, nor with his sprint speed.
Something is wrong with that back knee when he bats, and it is limiting his ability to post his typical ISO values. We obviously have no idea what's wrong, or how to fix it, but there is very clearly something wrong with Acuna...and it's probably the knee just like it was a problem in 2022.