Grant’s proven he guards a wide variety of 4s and 5s at an elite level;
I challenge this comment. 4s and 3s and a few fives, but a lot of bigger athletic players he is powerless to stop. He tries and he got himself in shape and hats off to him. But him at the five is a unmitigated disaster, due to lack of rebounding, and bad rim protection.
We clearly have different expectations of what is elite.
Per Cleaningtheglass.com, in Grant’s rookie season he played the Center position in 35% of his minutes. On defense, he ranked in the 96th percentile in Points per 100 possessions, 98th percentile in eFG%, 87th percentile in TOV%, and 82nd percentile in ORB% in said minutes.
His minutes at the 5 have decreased to 9% in 20-21 and 3% 21-22 with his percentages remaining consistent with his rookie season. The stats favor him being elite.
For video evidence (which there isn’t much readily available), here are a few possessions of the “bigger athletic players he is powerless to stop” like Bryant, Vucevic, Giannis, and Carter trying to post him up:
https://youtu.be/NTECzjex3a0. He’s held Jokic to a few of his worst performances during his MVP seasons and Giannis to his least efficient playoff series.
He’s too good for Centers to challenge off the dribble, too strong to be bullied in the post, and has the defensive IQ to clog lanes to prevent drives and either contest or box out. Grant is elite.