Bryce Harper has been prescribed rest for his ailing back, but he anticipates being ready well before Opening Day.

Harper sat out Monday for the fourth consecutive spring training game with soreness in his lower back. He left last Thursday's game against the Boston Red Sox.

Given his back issues in the past, Harper is aware of outside concern about his availability early in the season. He said he "overdid it" and will be ready for Opening Day on March 28 against the Atlanta Braves.

"I feel pretty confident. I'm fine," he said.