One of my son's friends will be playing baseball for an Ivy next year.
Academically he has a weighted GPA around 4.8-4.9 and an SAT around 1300.
Physically he's 6'7 and about 240, left handed pitcher/1B . Velocity wise he sits 88-89. He's a plus defensively and hits for power.
Another friend of his will be playing football for an Ivy next year.
He's got a 4.3 GPA and a 29 ACT.
He is 6'3, around 200 lbs. Averaged something like 250 yards passing and 100 running as a quarterback, and led his school to multiple state championships.
So, even though the Ivy schools are primarily academically focused - the athletes they get aren't necessarily slouches either.