"We'll see how things go," Washington said. "Today he feels good."
The Rangers have Yu Darvish, Nick Martinez and Colby Lewis pitching during the three-game series against the Yankees. Friday's starter is unknown. It could be Tepesch, Miles Mikolas or Jerome Williams.
Williams allowed one run in six innings in a victory over the Athletics on Friday but has not been scheduled for another start. He could be available out of the bullpen as soon as Monday.
In other pitching news, the Rangers have decided that Derek Holland will begin his rehab assignment on Wednesday, pitching two innings for Double-A Frisco. The Rangers made the decision after Holland went through another fielding drill on Sunday.
Holland, who is recovering from offseason surgery, did not look completely smooth in his fielding, but the Rangers decided to let him begin his rehab stint.
"I'm excited," Holland said. "I want to be out there playing. No matter how the season is going, if we go down, I want to go down with them. I just want to be a part of the team."
T.R. Sullivan is a reporter for MLB.com. Read his blog, Postcards from Elysian Fields and follow him on Twitter @Sullivan_Ranger. This story was not subject to the approval of Major League Baseball or its clubs.