Right fielder Alex Rios insists his lower back will be healthy enough for him to start the Chicago White Sox's opener Monday against Kansas City.

“We shouldn’t be worried," Rios said Tuesday. "I’m not worried. I know that I’m going to be ready probably either Thursday or whenever we have to play Milwaukee or opening day. I’m going to be ready.”

Rios hasn't played since Friday night, and manager Robin Ventura said he would like to see Rios play on Wednesday to ease any concerns.

Rios, however, didn't say that he was 100 percent healthy.

"I’m going to try to be in games in Milwaukee," said Rios, referring to the Sox's final two exhibition games on Friday and Saturday. "I felt a little better this morning. It was easier to get out of bed and do some stuff. But certain moves, I still feel a little pinch, but I should be fine.”

Rios didn't rule out playing Wednesday.

“It depends how I feel," Rios said. "I believe that I’ve made pretty decent progress from yesterday to today. I feel looser and see what happens.”

Meanwhile, pitching coach Don Cooper said Hector Santiago might start one of the games in Milwaukee but said that would be a game in which relievers would be used exclusively, with Dylan Axelrod starting the other game.

Cooper wouldn't confirm that Axelrod is the fifth starter, although Axelrod could throw up to 90 pitches in his final start this weekend.

"Nobody is penciled in yet," Cooper said. "We’re still making decisions. Robin will let you know all of that stuff. It’s not for me to announce that.”