Graham Garnett and Katie Morgan won the Mixed Doubles competition at Rossington Welfare Bowling Club on Sunday.
The Westfield Park duo beat Chris Jones (Denaby Welfare) and Kelley Rumney (Pilkingtons Recreation) 21-7 in the final.
Earlier they saw off Mick Corby and Joanne Stubbs in the quarter-final (21-7) and Martin and Michelle Bowley in the semi-finals (21-10).
Westfield Park A also remain on course for the Saturday League Section A title after a 193-161 win over Yorkshire Main.
Garnett, Morgan, Donna Stancliffe, Scott Parkes, Terry Hill and Steve Shannon all won their individual matches to help Park extend their lead at the top of the table to 18 points.
Armthorpe Welfare leapfrogged Rossington Welfare A into top spot in Section B after a 201-125 win over their title rivals.
Askern Welfare lead the way in Section C. Their latest win came against Pilkington Pensioners, 210-122.
Woodlands Park A currently top Division One of the Midweek League. They beat Yorkshire Main A 163-84 last time out.