Michigan
Scout Report
At 6-10 with a developing skill set and elite program backing, this Boston big man is positioned to make serious waves in college basketball.
Background
Quinn Costello hails from Boston, Massachusetts, where he's developed into one of the premier power forwards in his class at The Newman School. Playing alongside fellow blue-chip recruits Lucas Morillo (#59, Illinois commit) and Louis O'Keefe (#300, Princeton commit), Costello has been part of a loaded Newman School program that's produced multiple Division I talents. His rise through the Boston basketball scene has been marked by consistent development and exposure on the national stage.
Playing Style
Standing 6-10, Costello brings the size and length that modern college programs covet at the power forward position. His frame allows him to impact games on both ends of the floor, with the versatility to play inside and step away from the basket. At his height, he possesses good mobility for his size and shows developing skills that suggest he can continue expanding his range and overall impact. His presence in the paint provides rim protection potential while his developing offensive game offers upside as he continues to add strength and refine his skill set.
Recruitment
With 28 Division I offers from programs like Michigan, Purdue, Minnesota, Michigan State, Boston College, Florida State, Illinois, and Iowa, Costello ultimately chose to commit to Michigan. Ranked #44 nationally in the class of 2026, he projects as a player who could develop into a significant contributor at the Big Ten level with his combination of size, developing skills, and high basketball IQ.
Updated Feb 17, 2026 · Analysis by PrepRadar Scouting Team
Career Journey
Michigan
COLLEGE
The Newman School
PREP SCHOOL
Expressions Elite
AAU
Career Highlights
Quinn Costello named McDonald's All-American
Offers
28
Michigan
Committed
Chose Michigan over 27 other offers
Purdue
Minnesota
Michigan State
Boston College
Florida StateHighlights
Social Activity
In a New York vs Boston preseason matchup, we saw LuHi narrowly take down The Newman School which was a hotly contested at The Preview 🫣 The game featured Michigan commit Quinn Costello and top-ranked PG Jamaal McKnight 🌟 @Eleve11Hoops @quinncostello3 @jamaalmcknight3 https://t.co/4EHHwPNrOd
4⭐️ Michigan commit Quinn Costello is one of the fastest rising recruits in the country 👀 @quinncostello3 https://t.co/1IBoiXklGh
Magic 17u UAA finish ranked #14 in the 🇺🇸! A 28-6 record (16-4 UAA) led to a top 25 ranking from THE CIRCUIT for the 5th straight year! In 4 years the Magic are 62-15 17u UAA play! Excited for another BIG year in 2026! #MagicFamily #MagicDNA #UAA #TheCircuit #UnderArmour https://t.co/BLc0BWMk2v
Signed. Sealed. Built for the Maize & Blue Quinn Costello. Joseph Hartman. Marcus Moller. Malachi Brown. The next generation is here. #GoBlue | https://t.co/ZFzW97bBNu https://t.co/cKGbgWhpyI