Which leagues send players off most?

Red cards per match. The answer is a continent, not a country.

Primeira Liga (Portugal) sends players off more often than any other: 0,391 red cards a match.

Which leagues send players off most?
League	Reds per match	Matches
1. Primeira Liga Portugal	0.391	304
2. Liga MX México	0.384	333
3. Liga Premier Russa Rússia	0.342	240
4. Jupiler Pro League Bélgica	0.288	326
5. Liga Profesional Argentina Argentina	0.28	492
6. Ligue 1 França	0.274	376
7. Campeonato Italiano de Futebol - Série B Itália	0.253	388
8. Campeonato Turco de Futebol Turquia	0.252	369
9. Campeonato Saudita de Futebol Arábia Saudita	0.251	235
10. La Liga Espanha	0.245	376
11. Ligue 2 França	0.243	367
12. Campeonato Italiano de Futebol - Série A Itália	0.237	380
13. Segunda Divisão Espanhola Espanha	0.232	457
14. Swiss Super League Suíça	0.231	182
15. Campeonato Ucraniano de Futebol Ucrânia	0.231	143
16. Campeonato Austríaco de Futebol Áustria	0.225	191
17. Premiership Escócia	0.211	232
18. Serie A Brasil	0.201	374
19. Campeonato Romeno de Futebol Romênia	0.192	308
20. Super League China	0.184	174

Showing the major competitions. Include every competition

Second yellows count as the red they produce, exactly as the provider records them. Cups are left out: a cup draws an amateur side against a champion, which is a different game.