He was a college football All-American for the Michigan Wolverines, winning three Big Ten Conference titles and a national championship in 2023.

[1] He and his family left the country at seven months old after his father, a radio station director, received threats following the 2000 Haitian presidential election.

[3] As a senior, Sainristil was named Massachusetts' 2018 Gatorade Player of the Year after 30 receptions for 762 yards and 12 touchdowns as a wide receiver with six interceptions as a defensive back, helping Everett reach the Division 1 North Sectional semifinals.

[7][9] With the departure of receivers Donovan Peoples-Jones, Tarik Black, and Nico Collins, Sainristil played a larger role in Michigan's offense during the 2020 and 2021 season.

[17] He was named a first-team All-American by The Sporting News, ESPN and FOX,[18] finishing the season with 44 tackles, 1 sack, 6 interceptions, 2 returned for touchdowns and 2 forced fumbles.