MIAMI (AP) _ Colombia's Miguel Lora used crafty boxing and defense to outpoint Ray Minu Jr. of th Bahamas an score a uanimous deision to retain his World Boxing Council bantamweight title Friday night.

Lora overcame a slow start and took command in the second half of the 12- round fight. Lora used a left-right combination to floor Minus in the sixth round for the only knockdown.

Judge Tony Castellano of New York scored the fight for Lora 117-110. Antonio Marino of Venezuela had Lora winning 120-115. Anselmo Escovedo of Mexico favored the champion 118-110.

The 27-year-old Lora, making his fifth successful title defense since becoming champion in August 1985, improved his record to 28-0.

Minus, the WBC's 10th-ranked contender, was attempting to become the second Bahamian ever to become world champion. He is 21-4-1.

Minus was Lora's sparring partner for more than 70 rounds in 1985-86.

''Minus didn't realize I'm a different boxer in the ring than when we're sparring together,'' Lora said. ''I had a fight plan prepared, and that's what Ray didn't understand.

''But this fight was harder for me than the rest of my title defenses, not because I got hurt, but because his style was uncomfortable for me.''

Minus said he won the fight.

''I was the master of the boxers,'' he said. ''I felt the decision was unfair. I think I outboxed him.''