2017-18: Won the 100-yard freestyle at the 2018 Fazolis Invitational. Helped the 200-yard medley relay earn All-American Status at the NCAA Championships. Competed in four individual events and helped the 200-yard medley relay earn first place at the GLIAC Championships.
2016-17: Irelan competed in the dual meet against SVSU, taking first place in the 25-yard butterfly with a time of 12.07.
Before NMU: Irelan was a three-time conference champion in the 100 butterfly and a three-time state qualifier. A four-time all-conference pick, she was named Owosso High School's Most Valuable Player and Rookie of the Year.