Having been re-instated after Lincoln City fielded ineligible players in their 4-0 win at the Jakemans Community Stadium, the Pilgrims saw a mixture of fringe first teamers and under-23s and under-19s players, beaten by a near full-strength Tulips.
Tyler Winters' sixth minute goal set the ball rolling, with ex-Pilgrim James Clifton (82) and substitute Dan Sweeney (89) both striking inside the final eight minutes to seal the victory.
Spalding (3-5-2): Tony Breeden; Sam Cartwright, Nathan Stainfield (Sam Warburton 45), Glenn Walker; James Clifton (Lewis Hilliard 82), Kyle Barker (Lamine Sherif 46), Collins Tanor (Danny Draper 60), Joe Curtis (James Snedden 60), Riley O'Sullivan; Tyler Winters (Sam Bennett 70), Jordan Graham (Dan Sweeney 54).
Boston (3-4-2-1): Daniel Martin; Ellis Perry-Burdett, Zak Mills (Jack Butterfill 76), Ethan Sephton (Taylor Jaine 76); Tyler Knowles, Dylan Hill, Sam Essien (Will Langford 85), Ryan Hand; Nathan Bowen (Ezra Aaron 61), Michael Gyasi; Luke Horne. Subs (not used): Finley Ging, Kris Zaluzinskis.
Referee: Lee Hartley.
Attendance: 350.
PIC: Lee Keuneke.