Maske won the 1989 World Amateur Boxing Championships in Moscow and the silver medal at the 1986 World Amateur Boxing Championships in Reno, Nevada. His toughest opponents were Cubans, particularly Angel Espinosa, whom he met three times in 1987–1988, losing all three by a 0–5 unanimous decision, and luckily for him, Maske didn't met Espinosa at Seoul as Cuba boycotted the 1988 Olympics.