Figaro may not have been injured but he was certainly ineffective on Sunday, allowing six runs on nine hits over just 3.1 innings against the Braves. He had the best game of his career against the Marlins on June 12 (seven shutout innings) but had allowed eleven runs in less than eight innings since.
Hellweg, meanwhile, is 24 and will be making his major league debut this week. He's carrying a 2.82 ERA over 14 starts for Nashville this season despite battling some control issues: He's walked 5.2 batters per nine innings in his first AAA season.
Hellweg has been excellent for Nashville lately, posting a 0.82 ERA over his last five appearances. He pitched for the Sounds on Saturday and will make his MLB debut for the Brewers on Friday against the Pirates.