The No. 27 was retired by the San Francisco Giants on July 10, 1983 in honor of Hall of Fame pitcher Juan Marichal. Here is a list of the players who wore the uniform number before its retirement:
None. No San Francisco Giants player has ever worn a number higher than pitcher Dan Otero's No. 87 during the 2012 regular season.
No San Francisco player has ever worn a number higher than Dan Otero's 87.
Matt Cain has worn No. 18 for the San Francisco Giants since the 2006 season. Before that, he wore No. 43.
Outfielder Gregor Blanco wears the number for the 2014 San Francisco Giants.
Angel Pagan wears No. 16 with the San Francisco Giants.
Brandon Belt wears No. 9 with the San Francisco Giants.
Brandon Crawford wears No. 35 for the San Francisco Giants.
George Kontos wears No. 70 with the San Francisco Giants.
Gregor Blanco wears No. 7 for the San Francisco Giants.
Jake Dunning wore No. 51 with the San Francisco Giants.
Javier Lopez wears No. 49 for the San Francisco Giants.
Madison Bumgarner wears No. 40 for the San Francisco Giants.