In 2010, Stassi was named the Western Athletic Conference Pitcher of the Year and also earned second-team All-WAC utility honors.

[3] He hit 360 with 19 doubles, driving in 34 runs and scoring 29 times in 55 games for the Nevada Wolf Pack, earning First Team All-WAC honors as a first baseman during his senior season.

He split the next season between Williamsport, the Single-A Lakewood BlueClaws, and the High-A Clearwater Threshers, posting a .243/.329/.358 slash line with 3 home runs and 33 RBI.

[6] In addition to his offensive contributions, Stassi led Eastern League first baseman with a .995 fielding percentage, making five errors in 112 games.

[4] In 2016, playing for the Triple-A Lehigh Valley IronPigs in the International League, he hit .267/.369/.437 with 12 home runs and 58 RBI.

[18] He did not play a game for the team because of the cancellation of the ALPB season due to the COVID-19 pandemic and became a free agent after the year.

On June 14, 2021, Stassi had his contract purchased by the Philadelphia Phillies organization and was assigned to the Double-A Reading Fightin Phils.

On January 31, 2023, Stassi was hired by the Philadelphia Phillies organization to serve as the hitting coach for their High-A affiliate, the Jersey Shore BlueClaws.

His younger brother, Max Stassi, is a catcher who debuted with the Houston Astros in 2013 and currently plays with the Chicago White Sox.

The event consists of a home run derby between the brothers at the Yuba City High School field.