Mar 23, 2008 9:36 AM EST

With his teammates in Japan, Josh Beckett is in Florida trying to recover from back spasms, according to ESPN.com.

He threw a 45-pitch bullpen session on Friday and is scheduled to pitch in a minor-league game on Sunday.

"There are still some peaks and valleys," Beckett told The Providence Journal. "That first week I felt better every other day, and then every other day I felt worse. Now I'm at a point where I can do everything I need to do in between starts or bullpens. I've progressed, but it's only been in the last week where I can start to put a timetable when I can get on the mound."

Via ESPN.com