However, problems with the club's rented field (Campo da Feiteira) remained. Benfica moved to their first football grass field, Campo de Sete Rios, in 1913. Four years later, after refusing an increase in rent, they relocated to Campo de Benfica. Finally, in 1925, they moved to their own stadium, the Estádio das Amoreiras, playing there fifteen years before moving to the Estádio do Campo Grande in 1940. The Portuguese league began in 1934, and after finishing third in its first edition, Benfica won the next three championships in a row (1935–36, '36–37, '37–38) – the club's first "tri", achieved by Lippo Hertzka. Throughout the 1940s, Benfica would win three more Primeira Liga (1941–42, '42–43, '44–45) and four Taça de Portugal (1940, '43, '44, '49), with coach János Biri achieving the first double for the club in 1943.