Manager Terry Francona said Lowrie woke up Sunday morning not feeling well. Lowrie did rally a little bit once he got to Rangers Ballpark, but that he felt "light-headed" after taking batting practice. Francona said Lowrie swung the bat "OK."
"The hard thing for me is that if you make him available and he can't stay in the game," Francona said. "We'll see."
Francona was asked if Lowrie's bout with mononucleosis for most of the season could be impacting his tolerance of the hot conditions in Texas. All three games have been played in 100-plus degree weather."
"That would make common sense," Francona said. "I don't know that anybody has said that, but I would assume, yeah."
Francona spent two years as a coach in Texas and said he did get used to the hot summers.
"I'd go home at night and I'd get tired, but I like it," Francona said. "It's like playing in the cold. These guys get used to it. It's different."
Todd Wills is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.