The Baggies were in Seagrave at the weekend and came across a young Foxes side in impressive form, who have since climbed the U18 Premier League South standings.
Freddie Cook's fourth-minute goal gave City an early lead at LCFC Training Ground, before Reece Evans followed with one of his own with 14 minutes still to play.
It's a result which elevates Leicester up to 10th in the league table, on 13 points, ahead of welcoming Aston Villa to north Leicestershire on Saturday (11am GMT kick-off).
The details...
City: Weeks; Cook, Lindsay, Joseph, Grist (c); Nyoni, Richards (T. Thomas 87;), Lewis, B. Amartey, Ali; King (Evans 56').
Subs not used: Addai, Ononaye, McAlinney.
Goals: Cook 4', Evans 76'.