He was one of the youngest players in NHL history, at 20 years of age, to score a goal in the Stanley Cup Finals.
He was a supporting player with the powerhouse Penguins that won back-to-back Stanley Cups in 19.
He would later match this feat on 11 January 2003, by once again scoring three goals and four assists in a game against the Florida Panthers as a member of the Washington Capitals.
In 2000–01, Jágr was struggling to find his scoring touch and faced criticisms about his relationship with coach Ivan Hlinka With the return of Mario Lemieux from retirement, the Penguins had two superstars, but friction developed between the two; Jágr held the captaincy but many fans regarded Lemieux as the talisman of the team.
Some Penguins fans realized that the letters in his first name could be scrambled to form the anagram "Mario Jr.," a reference to teammate Mario Lemieux.
In the 1994–95 season, Jágr won his first Art Ross Trophy as the scoring champion of the NHL.
Jágr is also one of only 28 hockey players in the Triple Gold Club, individuals who have played for teams that have won the Stanley Cup (1991, 1992), the Ice Hockey World Championships (2005, 2010) and the Olympic gold medal in ice hockey (1998).