Suter was called up from Triple-A Colorado Springs to serve as the 26th man for Tuesday's doubleheader against the Cardinals.
The 27-year-old lefty has been up and down a couple times already this season, and this latest appearance with the big-league club figures to be a short stint. He has a 4.91 ERA in 7.1 innings in the big leagues and a 4.11 ERA in 35 innings at Triple-A. Look for him to serve as the long man if either of Tuesday's starters (Brandon Woodruff and Jimmy Nelson) fail to go deep into their starts.