Prior to his time with the Sharks, he spent one season as a volunteer assistant coach at his alma mater.

Rastivo was a four-year starting attackman on Hawk Hill from 2014-18, and as an assistant coach for the Hawks, focused his efforts on offensive player development and coordination of the substitution and face-off game.

In a shortened 2020 season due to COVID-19, Rastivo worked with Saint Joseph’s rookie attackmen Levi Anderson (15g, 9a) and Matt Bohmer (14g, 6a), who averaged 3.4 and 2.9 points per game, respectively, through seven contests. As a unit, SJU’s offense put up 72 goals on the year for an average of over 10 goals per game and scored double-digit goals in six of seven total competitions as the Hawks went 5-2 overall.

Also working with the face-off unit, Rastivo saw sophomore Zach Cole earn Inside Lacrosse All-American Second Team honors after winning possesions at a clip of 75.6%.

He has also spent time as both the Director of HHH Operations, Middle School Division and as the Offensive Coordinator at Germantown Academy (Fort Washington, Pa.). He has also worked with Big 4 Lacrosse/HHH Philadelphia since the fall of 2016.

The only USILA/Nike All-American in program history (after earning Honorable Mention recognition in 2016), Rastivo is Saint Joseph's program record holder in career goals, scoring 129 times over 59 career games played. He also ranks third in all-time career points (190) and 10th in all-time career assists (61) on Hawk Hill, and owned a point-scoring streak of 52 games, spanning from April 5, 2014 to April 21, 2018, which ranked fifth among all active Division I players upon graduation.

A three-time All-Conference selection, Rastivo was voted the 2016 Northeast Conference Player of the Year and Offensive Player of the Year (35g, 22a) as well as the 2015 NEC Offensive Player of the Year (43g, 19a). He was also tabbed to the 2016 Tewarraton Award Watch List.

After falling to an injury that sidelined him for the entire 2017 season, Rastivo worked his way back to total 37 points (24g, 13a) in all 15 starts en route to 2018 All-NEC Second Team honors as a graduate student.

Rastivo was also tabbed a 2018 Senior CLASS Award All-American selection, which speaks not only to his honors on the field, but to his successes in the classroom, within the community, and of his character, and was Saint Joseph's representative at the 2018 Philadelphia Sportswriters Dinner.