Malaysia staged a comeback to book a quarter-final berth in the Thomas Cup after Leong Jun Hao suffered a shock defeat in the first singles match against lowly Finland.
The national team put up a strong display in the next four matches to win 4-1, guaranteeing a slot in the last eight of the tournament being played in Horsens, Denmark.
Malaysia, which defeated England 3-2 yesterday, take on Japan on Wednesday for the top spot in Group B, which comes with a seeding in the fresh draw for the quarter-finals.
The 25th-ranked Jun Hao had gone down tamely to Finland’s world No 60 shuttler Joakim Oldorff in straight games of 21-17, 21-15 in 43 minutes.
Jun Hao, who was not fielded in the opener against England on Saturday, appeared lethargic as he made numerous unforced errors.
Justin Hoh evelled the score at 1-1 for Malaysia after sailing past Kalle Koljonen 21-14, 21-12 in 39 minutes.
Lee Zii Jia, ranked No 82, gave Malaysia the lead after defeating world No 706 shuttler Ananda Galvani Daniswara 21-19, 21-10 in the third singles in 35 minutes.
Goh Sze Fei-Nur Izzuddin Rumsani then wrapped up the tie for Malaysia by beating Eliel Melleri-Niilo Nyqvist 21-12, 21-15 in 23 minutes.
Scratch pair Soh Wooi Yik-Tee Kai Wun also had little difficulty by beating Ananda Galvani-Alvar Melleri 21-7, 21-14 in the final match.
Malaysia have won the Thomas Cup five times so far, the last being in 1992.