As a senior, he brought them to 8–4 and to the semifinals in the CIF Central Coast Section Open Division playoffs.
Carta-Samuels was named All-West Catholic Athletic League on their first-team roster following the season, and was invited to the U.S. Army All-American Bowl.
He lost a training camp battle for the starting quarterback position,[3] but made his college debut against Boise State in 2015.
Against number 7 ranked Stanford, Carta-Samuels led a late scoring drive that contributed to Washington's victory.
[5] Though he initially transferred to UCLA,[6] Carta-Samuels changed to Colorado State University (CSU) in March 2018.
[7] He beat out Justice McCoy and Colin Hill in training camp to earn the CSU starting quarterback position.
[10] In April 2021, Carta-Samuels was signed by the Dresden Monarchs of the German Football League (GFL).
[11] He led the team to their first ever league championship, being named German Bowl XLII MVP in a 28–19 victory over the Schwäbisch Hall Unicorns.