The Giants designated reliever Denny Bautista for assignment to create roster space for Todd Wellemeyer, according to the team on Twitter.
The 27-year-old Bautista has a respectable 3.74 ERA this year, even though he's walking nearly a batter per inning (7.4 BB/9). However, the right-hander strikes lots of batters out (11.8 K/9) and has allowed less than one hit per inning pitched. Bautista has already played for six teams and has maintained a high walk rate throughout his seven-year career.