He would backstop Albany to their first NCAA Tournament win in seven years by making 13 saves and allowing just six goals in the first round against Loyola.

He would make 214 saves on the season, good for eighth in Albany history, and contributed to the program's first-ever shutout in a game against UMass Lowell.

He also made national headlines for his coast-to-coast goal against Cornell in the NCAA Tournament, being nominated for the ESPY Award for Best Play.

In his senior season, Riorden would set Albany's career record for saves and was named a finalist for the Tewaaraton Award, as well as a third-team All-American, first-team all-conference, and America East Defensive Player of the Year.

[10] Following his freshman season at Albany, Riorden was invited by teammate Ty Thompson to spend the summer on the Akwesasne Reservation, where he played box lacrosse for the first time as a forward.

[3] Riorden has also represented the United States in the 2015 (where he was the only college player) and 2019 editions of the World Indoor Lacrosse Championship, winning bronze medals both times.

[15] Riorden was part of the original group of players to join Paul Rabil's PLL, being assigned to Chaos Lacrosse Club.