Red Sox pitcher Daisuke Matsuzaka is going to be placed on the 15-day disabled list Wednesday because of a sprain in his right elbow. The right-hander had an MRI done Tuesday afternoon and the images showed the sprain, according to manager Terry Francona. Michael Bowden, who had joined the Red Sox on Tuesday from Triple-A Pawtucket and was in the clubhouse, will be officially called up Wednesday to take Matsuzaka's spot on the roster.