The ball bounced into the net off an unsuspecting Hammond as United failed to clear a Baggies corner to hand the visitors all three Group D points.

The Pilgrims had named a strong matchday squad for the visit of Albion, but found the Championship youngsters a tough nut to crack.

Boston (4-4-1-1): Luke Faxon; Sai Sachdev (Connor Teale 46), George Ward, Jamie Grimes (Jake Rooney 46), Georgie Gent (Kai Mauro 61); Liam Clayton, Ben Hammond, Nicholas Pozo, Ken Aboh (Lewis Shipley 46); Connor McBride; Lenell John-Lewis (Lennon Wheeldon 61). Subs (not used): Tom Cursons, Louis Chadwick (gk).

West Brom (4-2-3-1): Brian Okonkwo; Alfie Maughan, Carter Pinnington, Noah Dupont, Adam Letlat; Matthew Crowther, Charlie Blackshields (Jamal Mohammed 90); Remar McNeil (Joe Belmont 78), Ryan Colesby (Nathan Dlamini 64), Jaden Francis-Caesar (Harry French 64); Rio Parmar (Antonio Perkins 78). Sub (not used): William Rutter (gk).

Referee: Kavan Hurn.

Attendance: 387.

PIC: Chris Bray.