| Puerto Rico, United States, Brazil, Venezuela and Canada qualified for World Men 1990. Argentina qualify as a host. |
| Finals | | Game | date | time | team 1 | score | team 2 | HT | | Final | 17.06 | |  Puerto Rico | 88-80 |  United States | | | 3-4 | 17.06 | |  Brazil | 158-124 |  Venezuela | | | 5-6 | 17.06 | |  Canada | 108-84 | Dominicana | | | 7-8 | 17.06 | |  Cuba | 88-81 |  Argentina | | | 1/2 | 16.06 | | Puerto Rico | 94-91 | Venezuela | | | 1/2 | 16.06 | | United States | 99-96 | Brazil | | | 5-8 | 16.06 | | Canada | 89-86 | Cuba | | | 5-8 | 16.06 | | Dominicana | 95-86 | Argentina | | | 1/4 | 14.06 | 19:00 | Venezuela | 109-102 | Dominicana | | | 1/4 | 14.06 | 21:00 | Puerto Rico | 94-89 | Argentina | 54-37 | | 1/4 | 15.06 | 19:00 | United States | 75-73 | Canada | | | 1/4 | 15.06 | 21:00 | Brazil | 104-87 | Cuba | |
| United States and Canada from North America. | | Brazil, Argentina, Venezuela and Ecuador from South America Men 1989. Paraguay replaced Uruguay. | | Puerto Rico, Panama, Cuba, Mexico and Dominicana from Centrobasket Men 1989. |
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| Final ranking | w | l | pf | pa | | 1. Puerto Rico | 7 | 1 | 771: | 707 | | 2. United States | 6 | 2 | 777: | 740 | | 3. Brazil | 7 | 1 | 930: | 739 | | 4. Venezuela | 5 | 3 | 873: | 842 | | 5. Canada | 5 | 3 | 717: | 668 | | 6. Dominicana | 5 | 3 | 766: | 769 | | 7. Cuba | 3 | 5 | 711: | 723 | | 8. Argentina | 2 | 6 | 736: | 746 | | eliminated in Groups Round | | 9. Mexico | 1 | 4 | 456: | 476 | | 10.Paraguay | 1 | 4 | 417: | 529 | | 11.Panama | 0 | 5 | 432: | 520 | | 12.Ecuador | 0 | 5 | 394: | 521 |
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| Groups Round. First 4 to Quarter-Finals. Rest are eliminated. |
| Group A | w | l | pf | pa | | 1. Puerto Rico | 4 | 1 | 495: | 447 | | 2. United States | 4 | 1 | 523: | 483 | | 3. Dominicana | 4 | 1 | 485: | 466 | | 4. Cuba | 2 | 3 | 450: | 449 | | 5. Mexico | 1 | 4 | 456: | 476 | | 6. Panama | 0 | 5 | 432: | 520 |
| Team | Puer | Unit | Domi | Cuba | Mexi | Pana | | Puerto Rico | ------ | | 101:73 | 101:98 | 97:88 | 104:83 | | United States | 105:92 | ------ | | 95:92 | 96:86 | 119:97 | | Dominicana | | 116:108 | ------ | 85:77 | 106:96 | 105:84 | | Cuba | | | | ------ | 89:88 | 94:80 | | Mexico | | | | | ------ | 98:88 | | Panama | | | | | | ------ |
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| date | time | team 1 | score | team 2 | HT | | 08.06 | 2. | Puerto Rico | 104-83 | Panama | | | 08.06 | | Dominicana | 116-108 | United States | 58-68 | | 08.06 | 21:00 | Cuba | 89-88 |  Mexico | 39-41 | | 09.06 | | United States | 105-92 | Puerto Rico | | | 09.06 | | Dominicana | 85-77 | Cuba | 43-40 | | 09.06 | | Mexico | 98-88 | Panama | 52-36 | | 10.06 | | United States | 95-92 | Cuba | 54-50 | | 10.06 | | Dominicana | 105-84 | Panama | | | 10.06 | 21:00 | Puerto Rico | 97-88 | Mexico | | | 11.06 | 11:00 | United States | 119-97 | Panama | 59-43 | | 11.06 | | Puerto Rico | 101-98 | Cuba | 58-51 | | 11.06 | | Dominicana | 106-96 | Mexico | 56-56 | | 12.06 | 11:00 | Cuba | 94-80 | Panama | 55-40 | | 12.06 | 13:00 | Puerto Rico | 101-73 | Dominicana | 52-44 | | 12.06 | | United States | 96-86 | Mexico | 55-42 |
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| Group B | w | l | pf | pa | | 1. Brazil | 5 | 0 | 572: | 429 | | 2. Venezuela | 4 | 1 | 549: | 488 | | 3. Canada | 3 | 2 | 447: | 423 | | 4. Argentina | 2 | 3 | 480: | 469 | | 5. Paraguay | 1 | 4 | 417: | 529 | | 6. Ecuador | 0 | 5 | 394: | 521 |
| Team | Braz | Vene | Cana | Arge | Para | Ecua | | Brazil | ------ | 131:99 | 101:84 | 90:82 | 131:90 | 119:74 | | Venezuela | | ------ | 99:78 | 130:106 | 111:84 | 110:89 | | Canada | | | ------ | 93:83 | 94:67 | 98:73 | | Argentina | | | | ------ | 106:85 | 103:71 | | Paraguay | | | | | ------ | 91:87 | | Ecuador | | | | | | ------ |
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| date | time | team 1 | score | team 2 | HT | | 08.06 | 1. | Brazil | 131-90 |  Paraguay | | | 08.06 | | Venezuela | 99-78 | Canada | 43-31 | | 08.06 | | Argentina | 103-71 |  Ecuador | | | 09.06 | | Brazil | 101-84 | Canada | 58-37 | | 09.06 | | Venezuela | 110-89 | Ecuador | | | 09.06 | | Argentina | 106-85 | Paraguay | | | 10.06 | 17:00 | Canada | 93-83 | Argentina | | | 10.06 | 19:00 | Brazil | 131-99 | Venezuela | | | 10.06 | | Paraguay | 91-87 | Ecuador | | | 11.06 | | Brazil | 119-74 | Ecuador | | | 11.06 | | Venezuela | 130-106 | Argentina | | | 11.06 | 15:00 | Canada | 94-67 | Paraguay | 44-36 | | 12.06 | | Brazil | 90-82 | Argentina | 46-45 | | 12.06 | | Canada | 98-73 | Ecuador | 45-35 | | 12.06 | | Venezuela | 111-84 | Paraguay | 64-36 |
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