Heuer (elbow) will make another rehab appearance Tuesday with Triple-A Iowa, Tony Andracki of Marquee Sports Network reports.

This could be one of the final tests for Heuer, who struggled in the early part of his minor-league rehab stint but tallied two strikeouts over 1.1 hitless innings this past Saturday versus the Triple-A affiliate of the Brewers. He worked 1.2 scoreless frames for Iowa last Wednesday. The 26-year-old reliever is on the long road back from Tommy John surgery.