This season, Rodriguez, age 31, has pitched to a 1.09 ERA with 26 strikeouts and six unintentional walks in 24 2/3 innings. For his career, Rodriguez has 304 saves and a 2.64 ERA (161 ERA+) across parts of 12 major-league seasons with the Angels, Mets and Brewers. In 2008, Rodriguez set the all-time record for saves in a season with 62.
As for the 20-year-old Delmonico, a sixth-round pick in 2011, he owns a batting line of .244/.351/.471 for High-A Frederick this season. As a pro, he's logged defensive innings at first, second and third.
For Baltimore, the addition of Rodriguez strengthens what was already an impressive right-handed relief corps.