Harden have opened a seven-point gap over Thackley in their bold bid for promotion to Division B.
And the two front-runners in Division C can put some more daylight between themselves and third placed Colton this weekend.
Harden, whose only league defeat so far came at Thackley, have since beaten Addingham and Alwoodley in successive matches, amassing almost 500 runs in the process.
Tomorrow, Harden go to fourth from bottom Upper Wharfedale, who have managed only two victories all season and who made their lowest score of the term - 116 - in a 39-run defeat at Woodhouse last week. Andy Moulds has been among the runs lately, while Neil Kettle took 69 off the Alwoodley attack last Saturday and Phil Leng impressed with the ball, taking four for 13.
Thackley will be keen to return to winning ways after successive defeats against Bolton Villas and Horsforth. They should get back on the right track at home to Olicanian, who share bottom spot with Pool Mills.
Ben Rhydding took five points from their winning draw with Mills last week but face stronger opposition when they visit third-placed Colton who were, nevertheless, given a run for their money by Olicanian.
Addingham, who ended a run of four defeats by winning at Bolton Villas, entertain Horsforth, whose confidence has been lifted by three wins out of four. Kiwi batsman Nish Gosnalkorale is the man in form for Horsforth with scores of 52, 49 and 31 in his last three innings.
Tong Park's bid for promotion from Division B suffered a blow when Silsden defeated them by two wickets, so they will be looking for a morale-boosting win at top-of-the-table Hall Park. The Horsforth side's Aussie, Matthew Elliott, blasted 108 and Richard Allinson contributed an undefeated 61 to see off Kirkstall.
Otley, a point behind Hall Park, will be chasing their sixth win on the bounce when they travel to Silsden, who have gone six games unbeaten.
Pool, promoted from Division C last season, climbed above Calverley into sixth place last week and the pair meet at Pool.
Calverley will be wary of Philip Dibb whose five for 37 haul put Illingworth to the sword last week.
Skipton, still in free-fall, entertain second from bottom Illingworth.
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