The Giants claimed pitcher Hunter Strickland off waivers from the Pittsburgh Pirates and optioned him to Single-A affiliate San Jose.
Strickland was on the Pirates' 40-man roster before being designated for assignment by the club on March 27.
The right-handed thrower has spent five seasons in the minor leagues and has yet to reach the Triple-A level. Last season, Strickland held a 4.46 ERA in 42 1/3 innings in Double-A and a 2.98 ERA with the Pirates High-A affiliate.
Strickland was drafted by the Boston Red Sox in the 18th round of the 2007 MLB Amateur Draft.