Hello, I have put together the new little football-cat gem / tool that lets you concatenate match files (for football clubs or national teams) in the one-line, one-match & one-file, one-season Football.CSV format into one PLUS (auto-)adding the missing league and season headers / columns inferred from the file’s basename (e.g. es.1.csv => ES1) and the file’s directory (e.g. /2020-21/ => 2020/21), for example. Happy data wrangling with ruby. Enjoy the beautiful game. Cheers. Prost.