Yup, mistyped. But agree Nelson is probably available. And Turnbull could go five, he just has to pitch well enough to do to.
Didn't realize Ruiz was out of options, but Ortiz isn't, and he was technically taking Kerkering's spot so they could just plan on him not coming back if they did want to add someone w/o options. 4/9 seems pretty far away. Marte also has options of course. There's just not anyone to flip-flop with once they (presumably) call up Mercado.
Rain also a complicating factor, you can't assume Wheeler will have a clean uninterrupted start on Wednesday. Both teams have Thursday off and Phillies aren't travelling far (Reds heading home) so I assume the game will be played when it can be played, on Wednesday.