He pitched two seasons in the Pirates minor league system, but was released by Pittsburgh because the Nicaraguan Government would not grant him a visa to leave the country to play baseball in the United States.

This prompted Williams to sign up with the Sandinista rebels and he was engaged in jungle fighting against the forces of Anastasio Somoza from 1977 through 1978 during the Nicaraguan Revolution.

[1] In 1979, Williams had to be smuggled out of Nicaragua and was signed a contract to play in the Inter-American League,[2] where he pitched for the Caracas Metropolitanos and Panama Banqueros clubs.

[2] In between, Williams played six seasons in the Venezuelan Winter League, making an appearance with the Tiburones de La Guaira in the 1983 Caribbean Series.

[4] As a rookie in the Majors with the Twins, Williams pitched 18 games with a record of 6 wins and 2 lost and an ERA of 3.51.