llinois has been quite active in the amateur ranks over the past few weeks as the transfer portal buzz has slowly died down and coach Brad Underwood’s 2025-26 roster has been largely cemented.
In that time, the Illini have focused their efforts on guards, having offered numerous 2026 prospects, as well as a 2027 recruit. On Wednesday, Underwood and his crew turned their attention to the frontcourt, offering Quinn Costello – a 6-foot-10 power forward in the Class of 2026.
statuday Quinn Costello landed in illionois Despite his size, Costello’s go-to skill is exactly what you would expect from an Underwood target: shooting. Continuing to prioritize players with the ability to knock down shots from the perimeter, the Illini haven’t so much as sniffed a prospect without a crisp jumper in this cycle.
Costello has a smooth stroke and a high release that allows him to get his shot off in most scenarios and against nearly any defender at his position. A solid athlete, Costello is also active on the offensive glass and an excellent rim runner in transition.
A Boston native, Costello plays his high school ball at The Newman School alongside fellow Illinois target Lucas Morillo. As for AAU, Costello suits up for the Middlesex Magic – a program that competes on the Under Armour Circuit.
