Olubi had five total tackles and forced a fumble in Sunday's win over Miami.
Olubi notched 26 tackles (20 solo), one pass defensed, one interception and one fumble recovery across 15 regular-season games with the Colts in 2023.
Olubi (hip) has been ruled out for Sunday's game against the Falcons, JJ Stankevitz of the Colts' official site reports.
Olubi (hip) is listed as out for Saturday's game versus the Steelers.
Olubi (hip) is questionable for Saturday's game against the Steelers after not practicing Thursday.
Olubi started at middle linebacker and had six total tackles, an interception and a pass defensed in Sunday's win at Carolina.
Olubi suffered a concussion during Saturday's preseason loss to the Bills, Joel A. Erickson of The Indianapolis Star reports.