A last-gasp winner from 16 year-old Rowan Richardson fired Peel into the Paddy Power FA Cup quarter-finals on Saturday.
Rick Holden’s side came from behind to win 3-2 at Old Boys.
A double from Lee Gale had kept the westerners in touch with two Callum Stewart goals for the home side.
Football: Teams through to first round of Junior cup
Union Mills won 11 goal thriller against St George's
Hockey: Over 45s through to England final
Second Manx side to reach a final this year.
Golf: Career best for Dawson in South Africa
Peel athlete impresses in Johannesburg
Football: Women's league title in sight for Peel
Westerners have six point lead after win over Corinthians
Manx duo heading to cheerleading world championships
They'll represent the Island in pom doubles in the USA this week