Poly won five straight games against City to open the 1950s, and 9 of the decade's 10 games, under legendary coach Bob Lumsden, for whom the school's current football stadium is named. Lumsden finished with an 11–7 record against City when he retired as head coach in 1966. He also coached 9–0 Poly to the unofficial National High School Championship Game at Miami's Orange Bowl in 1962, against the Miami High Stingarees, but Poly lost by a score of 14–6. The team's fortunes changed later in the 1960s, when City was coached by George Young. Young guided his teams to six wins over Poly, and an equal number of Maryland Scholastic Association championships. One of Young's most memorable victories occurred on Thanksgiving Day, 1965, at Memorial Stadium, when undefeated City beat undefeated Poly 52–6.