After two rounds of fixtures, four teams have maximum points in the First Division.
Hepworth & Idle (88-3), winners by seven wickets in the opening weekend, had an identical result against Laisterdyke.
The visitors collapsed alarmingly from 59 for one to 85 all out, Dale Wood being instrumental in their downfall by returning the remarkable figures of five for five.
For the second successive week, Great Horton Church almost plundered 300, reaching 294 for seven against Salem Athletic.
Sajid Hussain hit an unbeaten 84, including nine sixes, and Zafran Ghaffar continued his good start to the season, weighing in with 65. In reply, Salem were never in the hunt, being dismissed for just 135.
BT (Bradford) recorded an excellent win at Girlington, where Umar Nisar Khan (57) hit a second successive half-century. Facing a target of 204, the home side finished 28 runs short on 176.
Allerton (204-8) are the fourth team with a 100 per cent record after squeezing home by two wickets at Thornbury, where Arafat Sattar had earlier hit an unbeaten 83 out of the home side's 201.
Last seasons champions Norwood Green remain pointless after Lee Smirthwaite (5-18) had restricted them to 129 (Nabeel Nawaz 61).
Park Chapel were under the cosh at 103 for eight Mohammed Amin 5-40) in reply. However, Matthew Jordan (21) and Richard Winn (13) saw the Park Avenue side over the finishing line to record a narrow two wicket win.
In the Second Division, three teams remain unbeaten.
Laisterdyke made 137 (Craig Wilkins 53, Brian Heaton 5-26) to defeat Hepworth & Idle by a comfortable 52 runs.
Last season's champions Thornbury managed just 107 (Unman Hussain 5-33) at Allerton but that was far too many for the home side, who were dismissed for only 55 (Naveed Ansari 6-15).
Norwood Green (168-8) make up the trio at the top after a two-wicket win over Wibsey Park Chapel (164, Devrat Patel 74, Badar Munir 6-49).
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