It was ten years after the inception of the youth program, La Masia, when the young players began to graduate and play for their first team. One of the first graduates, who would later earn international acclaim, was previous Barcelona coach Pep Guardiola. Under Cruyff's guidance, Barcelona won four consecutive La Liga titles from 1991 to 1994. They beat Sampdoria in both the 1989 UEFA Cup Winners' Cup final and the 1992 European Cup final at Wembley, with a free kick goal from Dutch international Ronald Koeman. They also won a Copa del Rey in 1990, the European Super Cup in 1992 and three Supercopa de España trophies. With 11 trophies, Cruyff became the club's most successful manager at that point. He also became the club's longest consecutive serving manager, serving eight years. Cruyff's fortune was to change, and, in his final two seasons, he failed to win any trophies and fell out with president Núñez, resulting in his departure. On the legacy of Cruyff's football philosophy and the passing style of play he introduced to the club, future coach of Barcelona Pep Guardiola would state, "Cruyff built the cathedral, our job is to maintain and renovate it."
How many consecutive La Liga titles did Barcelona win from 1991-94?
four