Mobley, the No. 31 ranked player in the class according to the 247Sports composite rankings, joined close friend and 2019 five-star center Onyeka Okongwu, who committed to USC Monday.
Mobley’s commitment was expected from the moment USC coach Andy Enfield hired Eric Mobley, Isaiah’s father, to replace the fired Tony Bland as an assistant coach in late March. It is also expected that Isaiah’s younger brother, Evan Mobley, a five-star center in the 2020 class, will end up at USC.
The addition of Eric Mobley, who coached AAU in the area for more than a decade, has given the Trojans a major bump in recruiting already.