"He was going to see if he can possibly come in, in relief on Tuesday, and I said I didn't like that idea," Baker said. "Maybe try to get him ready for Thursday."
Johnny Cueto is starting the Wild Card game against the Pirates on Tuesday night at PNC Park. Latos had originally been targeted to start that game.
"We've got full faith in Johnny Cueto, and hopefully this works out fine, we win Tuesday, Latos comes back and is ready Thursday," Baker said. "If not we'll go a different direction."
Latos declined to speak with reporters Sunday.
Mark Sheldon is a reporter for MLB.com. Read his blog, Mark My Word, and follow him on Twitter @m_sheldon. This story was not subject to the approval of Major League Baseball or its clubs.