Estonian Ott Tanak will lead Rally Sweden into the final day after finishing Saturday's penultimate leg nearly a minute clear.
The Toyota driver led Norwegian Andreas Mikkelsen, in a Hyundai, and Citroen's Finnish driver Esapekka Lappi who were tied 54.5 seconds behind.
Belgian Thierry Neuville, also in a Hyundai, was a further 2.3 adrift.
Sunday's final leg involves just three stages and a total 51.3km of timed action.
Overnight leader Teemu Suninen lost more than a minute after going into a snow bank early in the day, handing the lead to Tanak. The M-Sport Ford driver later crashed into a tree and retired.
"This afternoon the grip changed at every corner and you never knew what to expect. Hopefully we can control things a bit tomorrow, but itвЂ™s never an easy ride," commented Tanak.
Six-times world champion Sebastien Ogier, winner of the Monte Carlo opener last month, returned to the fray after getting his Citroen stuck in a snow bank and retiring on Friday.
The Frenchman won three of the day's stages but was way back in 33rd place.
Valtteri Bottas has wasted little time in making amends for his winless 2018 campaign, taking an utterly dominant victory for Mercedes at the season-opening Australian Grand Prix.
Lewis Hamilton will start the opening race of the 2019 Formula One season from pole position after topping qualifying for the sixth season in a row at the Australian Grand Prix.
Formula One champion Lewis Hamilton topped the final practice session for Mercedes ahead of Saturday qualifying at the season-opening Australian Grand Prix, edging Ferrari's Sebastian Vettel.
Five-times champion Lewis Hamilton dominated Friday practice at the season-opening Australian Grand Prix, topping the timesheets for Mercedes in both sessions to deliver an ominous warning to his Formula One title rivals.
Defending Formula One champion Lewis Hamilton topped the timesheets for Mercedes at the first free practice for the Australian Grand Prix on Friday, edging rivals Ferrari in an eventful session.
Italian Andrea Dovizioso fended off Honda's MotoGP champion Marc Marquez at the last corner to win a dramatic season-opening Qatar Grand Prix for Ducati on Sunday.
World champion Sebastien Ogier won the Rally of Mexico on Sunday and added five bonus Power Stage points for a maximum score that sent the Frenchman up to second in the overall standings.
Maverick Vinales secured pole position for the opening grand prix of the 2019 MotoGP season in Qatar on Saturday but only after dramatic sessions which featured a series of crashes, headed by two spills for Jorge Lorenzo.
Honda's five times MotoGP world champion Marc Marquez set a record pace in practice for the season-opening night race in Qatar on Friday despite still recovering from major shoulder surgery.