What does a sending-off cost?

How often a side that has a player sent off goes on to lose. Across the majors it is 53.3% — against a baseline defeat rate near a third.

A red card is most expensive in EFL League One (England): the side reduced to ten loses 71,4% of the time.

What does a sending-off cost?
League	Went on to lose	Matches with a red
1. EFL League One England	71.4%	63
2. Thai League Thailand	69.8%	53
3. EFL League Two England	63.6%	77
4. Serie C - Girone B Italien	63.2%	87
5. Youth Championship Russland	63%	73
6. Fußball-Regionalliga West Deutschland	61.7%	60
7. Second League - Group 3 Russland	60.3%	73
8. Division 1A Belgien	60%	65
9. Championship England	59.7%	72
10. Perwenstwo FNL Russland	58.2%	134
11. 2. Liga Österreich	57.6%	59
12. 2. Liga Polen	57.5%	73
13. Second League - Group 1 Russland	57.1%	63
14. Segunda Liga Portugal	56.9%	72
15. 2. Fußball-Bundesliga Deutschland	56.7%	60
16. Primeira Liga Portugal	56.5%	69
17. TFF 1. Lig Türkei	56.4%	55
18. Super Liga Serbien	56.1%	57
19. Premjer-Liga Russland	55.6%	81
20. Liga 1 Rumänien	55.2%	67
21. Liga Pro Ecuador	54.8%	84
22. Serie C - Girone C Italien	54.5%	99
23. Fußball-Regionalliga Südwest Deutschland	53.8%	80
24. 3. Lig - Group 1 Türkei	53.7%	54
25. Primera División Bolivien	52.8%	72
26. Liga MX Mexiko	52.5%	99
27. Serie A Brasilien	52%	98
28. First League Bulgarien	51.8%	56
29. Ligue 1 Frankreich	51.7%	89
30. First NL Kroatien	51.4%	70
31. 3. Fußball-Liga Deutschland	51.3%	80
32. Serie C - Girone A Italien	51.1%	94
33. Eredivisie Niederlande	50.8%	59
34. Segunda División Spanien	50.8%	124
35. Primera División Peru	50%	106
36. Primera División Venezuela	50%	52
37. National League England	49.5%	95
38. Primera División Chile	49.5%	93
39. NB II Ungarn	49.4%	77
40. Persha Liga Ukraine	49.2%	61

Showing every competition. Major competitions only

League play only. A match counts once per side that saw a red, so a match with two sendings-off appears on both sides of the ledger.