Martínez signed a two-year contract worth $850,000 before the 1991 season. In 1991, he won his first MLB Player of the Week Award for the week ending July 14. He finished the 1991 season hitting .307/.405/.452, all career highs. In 1992, Martínez was selected to his first All-Star Game, and won his first MLB Player of the Month Award for July and his second for August, During the season, Martínez signed a three-year contract with Seattle worth $10 million, the largest contract given out by Seattle to that point.