Aside from an injury-shortened outing, Hammel had the shortest start of the season Sunday when he allowed six runs in 3 2/3 innings. He's gone eight games with earning a win, but he has allowed more than two earned runs in two games in that span.
Jungmann had won three straight starts before losing to the D-backs on Saturday in an outing doomed by a two-run, 33-pitch first inning. He has a 1.59 ERA in three starts at home and will face the Cubs for the first time.