Which leagues are decided by a single goal?

Share of matches won by exactly one — the closest football gets to a measure of tension.

Oman Professional League (Oman) is the tightest: 56,1% of its matches are settled by a single goal.

Which leagues are decided by a single goal?
League	Won by one	Matches
1. Oman Professional League Oman	56.1%	132
2. Premier League Ghana	53.9%	241
3. Ligue 2 Algerien	52.1%	240
4. Superliga Albanien	49.5%	182
5. Division d'Honneur Guadeloupe	48.4%	182
6. Premyer Liqası Aserbaidschan	47.4%	192
7. 1st Division Albanien	45.8%	240
8. Ligue 1 Tunesien	43.8%	240
9. Premier League Jamaika	43%	228
10. Primera B Metropolitana Argentinien	42.6%	420
11. A-League Men Australien	42.1%	140
12. Ligue 1 Algerien	42.1%	240
13. Super League Griechenland	41.7%	252
14. Primera D Argentinien	41.6%	320
15. Persha Liga Ukraine	41.5%	306
16. Primera División Venezuela	41.3%	317
17. Primeira Liga Portugal	41.3%	240
18. Birinci Dasta Aserbaidschan	41.2%	182
19. EFL League Two England	41.1%	557
20. Segunda División Venezuela	41.1%	258
21. Liga Nacional Honduras	41%	200
22. TFF 1. Lig Türkei	41%	310
23. 2nd Division - Group B Albanien	40.9%	132
24. 3. Lig - Group 1 Türkei	40.6%	342
25. Premier League Wales	40.5%	195
26. 3. Lig - Group 3 Türkei	40.4%	342
27. Süper Lig Türkei	40.3%	330
28. Ligue 2 Frankreich	40.3%	380
29. Primera Division Guatemala	40.3%	390
30. HKFA 1st Division Sonderverwaltungsregion Hongkong	40.2%	132
31. 1. Division Kasachstan	40.1%	272
32. Serie A Brasilien	40%	380
33. National 2 - Group D Frankreich	40%	305
34. Egyptian Professional League Ägypten	39.9%	143
35. National (D3) Frankreich	39.5%	370
36. Eerste Divisie Suriname	39.3%	135
37. Championship England	39.1%	557
38. TFF 2. Lig Türkei	38.6%	272
39. Primera División Spanien	38.4%	380
40. Segunda División Profesional Uruguay	38.1%	168

Showing every competition. Major competitions only

League play only. Draws are not counted here — they are their own question.