Club champion Steve Baker produced another master shot performance by hitting his third 100 of the season.
Shooting a faultless card, Steve steered Whitehall to a four point win over Average.
With their 14th victory in the league, Whitehall tightened their grip on the league championship which they led by two points over Country Lads.
Country Lads with a relatively low score of 377 still managed to maintain their title challenge by accounting for Wrong Trousers but, with only four points to spare.
Derek Atkinson with 97 was best for Country Lads, while Paul Hurworth and Peter Lindley both shot 95 for Wrong Trousers.
The third match saw Esk Valley with 384, shoot the highest score of the week to dispose of Castle Park.
The eight point margin of their victory was made that much sweeter for Esk Valley as it avenged a defeat by Castle Park on the last occasion the teams met. For Esk Valley, Jackie Hay led the way with 98 supported by Nigel Scarth and Colin Williamson with 97
In B League, following his 99 in the previous round, Matt Marsay almost matched it with a cracking 98 for Watkinson’s against Firemen who will be disappointed at not being able to improve on their previous week’s score.
In the same match, Jeff Kenworthy kept up his run of good scores with a 96 which left Firemen with too much to do.
Brian Gibbons with 94 was best of the Firemen’s team but their 10 point loss was due entirely to the run of good form shown by Marsay and Kenworthy.
Patch kept up their very slender hopes of retaining the B League title with an anticipated victory over bottom team Farmers.
Farmers however, returned their best score since November when Dave Hill and Mark Noble featured well, as they again did in their latest match against Patch.
Joe Hugill’s 96 was the main reason why Universal recorded their sixth win of the season.
Although the winning margin was only two points, Universal had to record their second best seasons total to achieve it, which they did when each member of the team shot into the 90s.
With only three matches left in the winter season, Watkinson’s need only one more point to take the B League title from Patch whom they meet again in round 18.
In their three previous encounters, each team has won one match and one has been drawn in what were three high scoring, tightly contested matches.
Results, Round 17, A League
Esk Valley 384 J Hay 98 N Scarth 97 C Williamson 97 D Noble 92 beat Castle Park 376 C Moore 97 M Dossor 94 C Dossor 92 R Oliver 92; Country Lads 377 D Atkinson 97 M Atkinson 96 S Atkinson 95 P Turford 89 beat Wrong Trousers 373 P Hurworth 95 P Lindley 95 A Martin 92 J Stokoe 91; Whitehall 382 SP Baker 100 T Coates 97 M Ware 94 A Rowell 91 beat Average 378
Watkinsons 373 M Marsay 98 J Kenworthy 96 D Pratt 90 J Headley 89 beat Firemen 363 B Gibbons 94 P Cattermole 93 I Clarkson 90 H Russell 86; Patch 368 C Rutland 95 P Rutland 93 I Harrison 90 J Wood 90 beat Farmers 361 M Noble 93 D Hill 93 RM Franks 88 Y Williamson 87; Universal 368 J Hugill 96 D Holloway 91 M Troughton 91 B Martin 90 beat Average 366.