Underwood chose LSU over a final group of Alabama and Michigan, giving coach Brian Kelly the best prospect and top quarterback in the cycle.
A 6-foot-4, 205-pound recruit from Belleville, Michigan, Underwood had offers from the likes of Alabama, Auburn, Florida, Florida State, Georgia, Michigan and most other major programs. However, it was LSU that won out.
"They offered me as a sophomore, have been recruiting me since then and the program history," Underwood said. "They have great program history, great quarterback history, as well."
As a junior at Belleville High School, Underwood threw for 3,165 yards and had 40 touchdowns with just two interceptions. He also had 160 rushing yards and seven rushing touchdowns for the team. He is viewed as a potential immediate impact prospect for LSU.
Underwood has aspirations to make it to the next level, which he said was a big part of the discussion with the LSU coaches.
"The development for me as a quarterback to prepare myself for the NFL is what mattered for me," Underwood said. "Also, having a relatable offense that I'm getting into is a big thing as well."
LSU's staff also was able to utilize the fact that Jayden Daniels had just won the Heisman Trophy. That resonated with Underwood, who said he's able to see the success he could have at LSU, rather than having to envision what could be.
His commitment gives the Tigers four ESPN 300 commitments in the 2025 class, along with five-star wide receiver Dakorien Moore (No. 4 prospect overall from Duncan, Texas), running back Harlem Berry (No. 16) and linebacker Keylan Moses (No. 265).