Matt Williams
Matt Williams did it in 1989, 1997, and 2001.
It has never happened in the history of the World Series.
There are three teams that have never made it to the World Series. The Seattle Mariners, the Washington Nationals, and the Texas Rangers.
Matt Williams is the only major-league player to hit home runs for three different teams in the World Series. He hit homers in the Fall Classic for the San Francisco Giants in 1989, the Cleveland Indians in 1997 and the Arizona Diamondbacks in 2001.
Detroit Tigrs and New York Giants
Pele
*Don Baylor has played three times in the World Series, in 1986 with the Red Sox, 1987 with the Twins, and 1988 with the Athletics. *Eric Hinske has played three times in the World Series, losing with the Rays in 2008 and winning with the Red Sox in 2007 and Yankees in 2009. Lonnie Smith played in four World Series with four different teams, 1980 with the Phillies, 1982 with the Cardinals, 1985 with the Royals, and 1991 and 1992 with the Braves. * did it in consecutive years
Three teams have won the World Series exactly 5 times: The New York Giants, the Cincinnati Reds and the Pittsburgh Pirates.
It has never happened in the history of the World Series.
Braves cardinals dodgers
Since the beginning of World Series play in 1903 no team has won the Series after having lost the first three games.