Leaders Canaries were beaten 15-11 in a last-end decider by second-placed Jaytones and saw their lead reduced to just one point.
Woodentops, meanwhile, moved level on points with Jaytones after squashing Ladybirds 27-4, and Follies missed the chance to go joint-top when losing 15-8 to Birdies.
* In Division Two of the Morning Triples League, only four points separate all six teams, with Backwoodsmen hanging on to a one-point advantage after being held to a 12-12 draw by bottom team Unreal Madrid.
Second-placed Pips could have taken top spot, but drew 12-12 with Louth and also suffered a 12-8 defeat against Not So Hotspurs.
* A 17-8 victory over Blossom Way in the Evening Fours kept APS four points ahead of Fast Shippers who eased to a 21-11 win over Stags.
But Roundheads lost ground when going down 18-15 to Alford.
* In the Friday Mixed Pairs League, Rachael Stanley and Mike Norton survived a tough game against Carol and Keith Kelly to win 17-13.
The result opened a two-point gap over Carol and Colin Smith who lost 18-17 to Sylvia Stainton and Tony Musson in another tight encounter.
Wendy and Vic White moved into third spot with a 19-9 victory over Irene Bailey and Tony Saunders.
At the bottom, Wendy Blyth and Alan Watson got their first win of the season when beating Brenda True and Tony Powell 17-13.
And in Division Three, Sally and Barry Coultas maintained their unbeaten record with a 21-9 win over Pat Morley and Malcolm Pearce.
* There was a strange game in the Afternoon Triples between Dodgers and Trevs where Trevs scored a maximum count of nine on one end and followed up with a six later in the match.
But Dodgers still somehow managed to win the game 21-19.