Boston Mixed 1 met Spalding in a re-arranged home fixture.
Danielle Frankish, Geoff Presland, Rachel Atkinson, Geoff Short, Tracy Frankish and Ryan Frankish won 7-2 to secure the 2021 league, despite a loss to Boston 4 along the way.
Boston 3 another team that only lost one match all season, finished in the runner-up position when rubber difference is taken in to account.
For Boston 4 a postponed away match against Spalding was played, Michal Chmielik, Margaret Wright, Akhtar Parvaiz, Sarah Grant, Peter and Hilda Hastings winning 7-2.
Boston Mixed 3 – John Gibson, Rachel Gedney, Ray Frankish, Hilary Calvert, Chris Cook and Mary Smura – played against Woodhall away, succeeding 7-2.
There was a very good result for the Ladies' Third team in the Dunlop Lindum Lincolnshire Doubles League.
A very young team went all the way to Appleby Frodingham to play a strong team that has featured over many years.
The team of Penny Gibbons, Poppy Gibbons, Lois Boothby and Emily Stukins played very well to force a draw although they missed out on points after losing the deciding tie-break.