During her career with the Maize and Blue, Armstrong racked up a pair of divisional Most Valuable Player accolades (2003-04) and four CWPA All-Division First Team honors (2002-05). Armstrong excelled at the Eastern Championship, earning two MVP honors (2003, '05) as part of three All-Eastern Championship first team nominations (2002, 2004-05). On the national level, she earned All-America recognition in each season, making the second team in 2004, third team in 2005 and honorable mention in her first two campaigns at Michigan.

"To be able to do it was just wonderful because you want the best for your players and you want them to follow their dream and that's what Betsey (Armstrong) has done. It was a very very special moment, " noted University of Michigan Head Coach Matt Anderson, who presented Armstrong for induction into the Hall of Fame.

In May 2006, she earned a spot on the USA National Team following an open tryout. In just under two years with the squad, Armstrong has led Team USA to a gold medal at the XV Pan American Games -- securing the country's spot at the 2008 Olympic Games in Beijing, China -- and gold medal victories in both the FINA World League and FINA World Championships. At the World Championships, Armstrong was recognized as the tournament’s Most Outstanding Goalkeeper.

A product of Ann Arbor Huron High School, Armstrong was the Michigan water polo program's first in-state recruit.