Tasmania beat 4 for 168 (McDermott 70) queensland 164 (Meredith 5-26) by six wickets
Meredith took two in her first spell and three in her second as Tasmania captain Jordan Silk kept Queensland at Allan Border Field in Brisbane.
The hosts were bundled out for 164 in 44.1 overs and Tasmania reached their target with 18.4 overs and earned their second bonus point in as many matches. Queensland started the competition with two losses.
Openers McDermott (70 off 83) and Caleb Jewel (43 off 37) scored 94 runs in 15.3 overs, their second big stand in as many games after 198 against South Australia and Queensland to defend their modest total. effectively thwarted expectations.
Australian T20 and ODI representative McDermott hit ten fours and a six in a generally fluent and powerful innings after his 71 against the Redbacks, against which Jewel scored 126.
The Tasmania pace quartet took the pace off the wicket and was backed by some high-quality catching and ground fielding, and left-arm spinner Tom Andrews.
Meredith, who represented Australia in ODI and T20I formats last year, returned career-best limited-overs figures. The 25-year-old fast bowler bowled five maidens in his two spells, troubling the Bulls with his length, line, movement and pace.
Mark Steketty, batting at No. 9, scored an unbeaten 35 off 36 balls for Queensland, their highest domestic one-day competition total.
Queensland could not put up a partnership of more than 18 until their ninth-wicket pair of Stecketti and Javier Bartlett added 48 to save them 8 to 95.
Tasmania’s attack was so effective that it took 22 overs for a Queensland batsman to reach 20 and seven of the top eight were dismissed under 14.
Max Bryant (26 off 40) was the only specialist batsman to start. Test stars Usman Khawaja and Marnus Labuschagne, who were lbw from Meredith, were dismissed for 13 and 10 respectively.