In the 1990s, one clear trend in football was the increasing rationality in formation structures, with a decrease in the number of forwards and an increase in midfield players.
Why was this the case? Beyond changes in the rules, the most important factor was tactical innovation.
Just as Arsenal had once employed the WM formation in the 1930s, Italy introduced the catenaccio in the 1960s, and the Netherlands showcased Total Football in the 1970s, the 1990s also had its share of evolutions. Yet in today's game, it has become almost impossible to witness a true tactical revolution. The world has entered a synchronized era, where the most popular systems are studied, copied, and adapted everywhere, leaving little room for anyone to surprise.
