Old Hill stole a march on the rest as they proved the Birmingham League top flight's only winners of the day.
Ravi Nagra's matchwinning 144 against Moseley helped Harshad Patel's side leapfrog above Knowle and Dorridge and Barnt Green into second place in the table.
The three sides are level on 97pts, but Old Hill have now secured the runners-up spot by virtue of having won more games.
They have secured four victories, which is one more than leaders West Bromwich Dartmouth.
Nagra's quick-fire splendid century set up the 100-run victory over Moseley after a confidence-building opening partnership between Patel (37) and Attiq Ur-Rehman (54).
The main bowling honours then went to young Worcestershire spinner Shaftab Khalid, who claimed four for 33, while Rehman also did well with the ball, taking three for 30.
Dartmouth's gap at the top has been narrowed to 19 points by their failure to win at reigning champions Wellington.
A six-wicket haul for Wellington captain Gavin Byram, well-supported by three wickets for Greg Johnson, helped limit Dartmouth to 191 for nine from their 55 overs. Visiting skipper Matt Rawnsley top-scored with 45.
Wellington's tireless opening attack bowled unchanged, Byram's 27-over effort more than proving his return to full fitness, given his many injury problems down the years.
The pair then did well with the bat too, Johnson top-scoring with 49, while Byram made 27 as Wellington fell well short, ultimately avoiding defeat on 155 for 6.
That leaves Wellington with a lot of ground to make up on the leaders if they are to bring a third successive title to Orleton Park. They currently stand 38 points adrift of leaders Dartmouth which, even after only seven of the summer's 22 games, is still quite a gap.
Although each dropping a place in the table, K & D and Barnt Green actually moved closer to Dartmouth after claiming 15 points apiece from winning draws at home to Himley and Walsall respectively.
Warwickshire's Trevor Penney hit an unbeaten 74 on his first appearance of the season for Knowle, well supported by Darren Dalton's 56 and 39 from Lee Marland.
Shafiq Ahmed took four wickets for Himley, but the visitors were never in touch in reply. that was chiefly thanks to a hostile spell from South African overseas signing Bryan McClaren, who took six for 33. And it took Himley's last pair to hang on to avoid defeat.
Barnt Green also failed narrowly in their bid to force victory at home to Walsall.
A century opening partnership between their winter signing from Kington, Steve Williams (84) and Herefordshire's Richard Hall (54), supported by Roger Sillence's 35, helped the Green pile up 258 for six. But only three Walsall batsmen managed to make double figures in reply, being rescued from defeat chiefly by two of their new boys Dave Middleton (43 not out) and Nathan Round (35).
At the wrong end of the table, Kenilworth Wardens moved up two places after having the better of a lowscoring game against fellow strugglers and bottom club Halesowen.
Imran Ali was in top form, taking seven for 67 as the Wardens were bowled out for 161, of which Mitesh Patel made 59. But Halesowen again struggled in reply, only three men making double figures.
And, once top scorer Faisal Shahid had gone for 65, it was a struggle for Halesowen, whose last pair had to hang on at the end to stave off defeat.
It was also drawn in another basement battle, the local derby between Coventry and Leamington.
Visiting skipper Rob Williams top-scored with an unbeaten 76 as Leamington ran up 227 for eight.
But Coventry captain Greg Smith was then just four runs short of a century in reply as the home side held on for a draw on 189 for seven.
That was not enough to take them out of the relegation zone, but they are still 13 points clear of the bottom.