Who was the youngest pitcher for the astros?

Answer 1

The youngest pitcher to start a World Series game was Livan Hernandez of the 1997 Florida Marlins who started Game 1 of the 1997 World Series at the age of 22 years, 241 days old (born February 20, 1975 and Game 1 was played October 18, 1997).

Answer 2

Charlie Vaughn for the 1966 Braves.

Vaughn (born October 3, 1947) was 18 years, 11 months old when he started for the Braves on September 3, 1966 against the Astros. He pitched 7 innings and gave up 8 hits and 2 runs, getting the win in a Braves 12-2 victory.

Vaughn's MLB career consisted of two games, one in 1966 and one in 1969.

Answer 3

Larry Dierker.

Dierker debuted for the Astros on his 18th birthday (born September 22, 1946 and debuted September 22, 1964). He made a start against the Giants and went 2 2/3 innings giving up 4 runs and 5 hits and getting the loss in an Astros 7-1 loss.