91 Twins had Allen Anderson, David West, Mark Guthrie, Tom Edens, Willie Banks start 58 games. 1993 Phillies had Ben Rivera start 28 games. The 1997 Giants had a rotation of Estes, Rueter, Gardner, Vanlandingham, Alvarez and Osvaldo Fernandez. 1998 Padres had Sterling Hitchcock and Pete Smith (not to mention a way way way way past his prime Mark Langston), 1999 D-Backs had Omar Daal, Reynoso, Brian Anderson and Todd Stotlemyre. 2008 Rays had Andy Sonnastine, 2011 D-Backs had Zach Duke, Amando Gallaraga, and Barry Alright.
Outside of the 2007 Cubs every worst to first team I remember had piecework or well below average starters on their team. It's usually part of the reason they were in last the year before.