St. Louis is one of three players in NHL history listed at 5-foot-8 or shorter to finish his career with more than 1,000 points, joining Henri Richard (1,046) and Theo Fleury (1,088). He, Richard, Fleury and Cliff Ronning are the only undrafted players with at least 600 career assists.
St. Louis is the only player in the history of the Tampa Bay Lightning to win the Art Ross Trophy as the NHL's top scorer; he did it in 2003-04 and again in 2012-13. The eight years between Art Ross wins is the largest such gap by any player since the award was introduced in 1947-48. His second win also made St. Louis (37 years, 314 days) the oldest player in NHL history to win the Art Ross Trophy; the record had been set in 1962-63 by Gordie Howe (34 years, 358 days).
After signing with the Lightning on July 31, 2000, St. Louis went on to set Tampa Bay records for career assists (588) and points (953). He also owns the Lightning record for playoff goals (35) and points (68). St. Louis led all players with 15 assists in the 2004 Stanley Cup Playoffs to help the Lightning win their first Stanley Cup. His 15 assists in 2004 remain a single-postseason Lightning record.
St. Louis scored 15 regular-season goals against Brodeur, tied for the fifth-most against his fellow member of the Class of 2018 behind Simon Gagne (19), Jaromir Jagr (18), Mike Knuble (18) and Eric Lindros (16). St. Louis also scored five playoff goals against Brodeur.
While playing for Canada, St. Louis won a gold medal at the 2014 Sochi Olympics, two silver medals at the IIHF World Championship (2008, 2009) and helped Canada win the World Cup of Hockey in 2004.