PG East: After City League title game loss, Allderdice boys regroup for PIAA playoffs Allderdice will face WPIAL runner-up Mt. Lebanon (21-5), a familiar opponent, in the PIAA first round Saturday at 1:30 p.m. at Peabody. Knowing that a postseason run was possible with his team this year, McDonald scheduled a challenging out of league schedule of games, including a matchup against Mt. Lebanon. Allderdice defeated Mt. Lebanon, 42-40, Jan. 17, 2009.