To date the Cincinnati Reds have the worst starting pitching in baseball thanks in large part to injuries. They had a good rotation in theory with Dan Straily, Anthony DeSclafani, and Homer Bailey penciled in at the end of 2016. Then they traded Straily and the dominoes began to fall.
After Straily left, Bailey, DeSclafani, and prospect Nick Travieso all started the season on the DL. The Reds should have anticipated that with Disco and Bailey both running into issues to start the season. The Travieso injury was unexpected, but not unheard of.
Since then starters Rookie Davis, Brandon Finnegan, Amir Garrett, and Sal Romano have all spent time on the DL in Cincinnati or Louisville.