BOSTON -- A rainout on Saturday and concerns about pitcher Vicente Padilla's strained right ankle have led the Rangers to alter their starting rotation.
The Rangers aren't ready to put Padilla on the disabled list, but manager Buck Showalter said the right-hander was "50-50" for his next start, now scheduled for Tuesday, against the New York Yankees at Yankee Stadium.
Saturday's game, scheduled for 7:05 p.m. ET was postponed in the afternoon before anybody went to Fenway Park. It will be rescheduled as a doubleheader when the Rangers return to Boston on June 9-11, but the exact date has not been set.
John Koronka was scheduled to pitch on Saturday but he is being pushed back to Monday, with Padilla moved back and tentatively slotted for Tuesday. Kevin Millwood will still pitch on Sunday as scheduled.
"With John's history, I think the most he's pitched in one season is 165 innings, whenever we get an opportunity to give him an extra day or two, we'll take it," Showalter said. "It's a good opportunity to give him a blow."
Padilla twisted his ankle running in the outfield about 10 days ago and it still has not completely healed. He pitched with it heavily taped in a 4-3 loss to the Minnesota Twins on Wednesday.
The Rangers are hoping that he can pitch on Tuesday. If not, left-hander John Rheinecker will be called up from Triple-A Oklahoma.
That was part of the original plan before Saturday's rainout.
"The new part of this is Padilla's right ankle," Showalter said. "We're hoping Vinnie goes Tuesday, but the ankle is still tender. We'll monitor that and see."
If Padilla goes Tuesday, Kameron Loe would follow on Wednesday and right-hander Robinson Tejeda would be called up from Oklahoma to pitch on Thursday in the final of a four-game series against the Yankees.
If Padilla can't go Tuesday, the Rangers will push him back to Thursday. If he's still not ready, then he would likely go on the disabled list and Tejeda would pitch instead.
Padilla was supposed to throw in the bullpen on Friday but that was scratched because of the ankle.
Rheinecker will likely fly to New York on Monday as a contingency plan just in case Padilla can't pitch. All this could change if the Rangers are rained out again on Sunday. More rain is scheduled for the Boston area.
"We're taking it one rainout at a time," Showalter said.
T.R. Sullivan is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.