By Jose G. GuerraSpecial to the AdvanceThe McAllen Memorial Mustangs opened the season with a stampede, scoring three times in the first half to capture a 28-20 victory over Brownsville Hanna on Thursday in McAllen.Sebastian Aleman set the tone for the Mustangs, breaking away with a 54-yard touchdown run on the game’s second play, and the big scoring plays became the theme of the night for McAllen Memorial. Dylan Goodson scored twice for Memorial, once on a 48-yard pass from quarterback Kane Coy and another on a 6-yard run.Memorial led 21-14 at the half.JP Garza scored after a Hanna touchdown ...