The 21-year-old arrived in Melbourne in form after he helped guide Team Canada to the ATP Cup title in Sydney earlier this month. However, the eight-time tour-level titlist was tested to the limit against Ruusuvuori, but found a way through, hitting 26 winners to triumph after three hours and 43 minutes in their first ATPHead2Head meeting.
Auger-Aliassime is making his third appearance in Melbourne, with his best result at a major coming at the US Open last year when he enjoyed a run to the semi-finals. The World No. 9, who fired eight aces in his first-round win against the Finn, will next meet Australian wild card Alex Bolt or Spaniard Alejandro Davidovich Fokina.
The 31-year-old is now 6-1 on the season after he earned three victories for Great Britain at ATP Cup and advanced to the semi-finals at the Sydney Tennis Classic. Evans will play Australian Alexei Popyrin or Adelaide International 2 finalist Arthur Rinderknech in the second round.
© Peter Staples/ATP Tour