Bangladesh stunned Sri Lanka by 25 runs; Australia thumped England by six wickets, while Pakistan overwhelmed Afghanistan by 109 runs on the opening day.
Bangladesh shocked Sri Lanka in their ICC Under-19 World Cup Group D opener at the Allan Border Field at Brisbane on Saturday.
Chasing 250 to win, the Sri Lankans were never in the game and despite Angelo Jayasinghe's 83 they were bowled out for 224 in 48.4 overs. Medium-pacer Saumya Sarkar took 3 for 10 in 1.4 overs to wrap it up for the Bangladeshis.
Earlier, after being put into bat, Bangladesh rode on captain Anamul Haque's 101 off 127 balls to a fighting total of 249 for 7. He got good support from Asif Ahmed who made 84. Both stitched 141 runs for the third wicket. Sanitha de Mel returned with 3 for 46 for the Sri Lankans.
Bangladesh 249 for 7 (Haque 101, Asif 84; de Mel 3 for 46) beat Sri Lanka 224 in 48.4 overs (Jayasinghe 83; Sarkar 3 for 10) by 25 runs.
In other matches:
Pakistan crushed Afghanistan in a Group B match at John Blanck Oval in Buderim. Chasing 254 to win, the Afghans could only go as far as 144 in 45.1 overs. Only Hashmatullah Shaidi (50) and Mohibullah Paak (30) could contribute something with the bat. Pakistan pacer Zi-ul-Haq took 4 for 30.
Earlier, after being put into bat, Pakistan reached 253 for 6 thanks to fifties from captain Babar Azam (75) and Mohammad Nawaz (66).
Pakistan 253 for 6 (Azam 75, Nawaz 66; Shirzad 2 for 43) beat Afghanistan 144 all out in 45.1 overs (Shaidi 50; Zia-ul-Haq 3 for 40) by 109 runs.
Australia also got off to a winning start with a six-wicket thumping of England in a Group A tie at the Tony Ireland Stadium in Townsville.
Chasing 144 to win, Travis Head led the Aussie chase with an unbeaten 57 as the hosts got over the line in the 36th over. The start had been a poor one as both openers Cameron Bancroft (2) and Jimmy Peirson (0) got out without any real contribution. Jamie Overton saw the back of Bancroft, while Reece Topley sent Peirson back.
The wickets of Meyrick Buchanan (16) and Kurtis Patterson (19) in quick succession further made things bleak for them. At one time, the Aussies were gasping for breath at 54 for 4. But Head and William Bosisto (35) kept their nerves to add an unbeaten 93 to see their team home.
Earlier, after being put into bat, the English team put up a bad batting performance, skittled for 143 in 38.3 overs. Apart from Craig Overton (35 off 81 balls) none of their batsmen could hang in there. For Australia, medium-pacer Gurinder Sandhu and offspinner Ashton Turner picked up three wickets each. Joel Paris and Mark Steketee chipped in with two wickets each.
Australia 147 for 4 in 35.1 overs (Head 57 not out; J Overton 2 for 34) beat England 143 all out in 38.3 overs (C Overton 35, Ball 20 not out; Sandhu 3 for 27, Turner 3 for 30) by six wickets.
Zimbabwe also thrashed Papua New Guinea by 104 runs in a Group C encounter at Townsville.
Needing 250 to win, Papua New Guinea could only manage 145 all out in 38.1 overs. Earlier, the Zimbabweans posted 249 for 7 thanks to openers Kevin Kasuza (97) and Luke Masasire (47). Both added 109 before Christopher Kent sent back the later. The leggie went on to take a five-for and it was he who restricted the African team to under 250.
Zimbabwe 249 for 7 (Kasuza 97; Kent 5 for 45) beat
Papua New Guinea 145 all out in 38.1 overs (Bau 34; Bentley 2 for 20) by 104 runs.