Rodriguez (knee) is unlikely to be ready for Opening Day, Pete Abraham of The Boston Globe reports.

Rodriguez has been in a holding pattern in his rehab over the last week and is quickly losing time needed to be ready for Opening Day. A bullpen session soon would be encouraging, but it's beginning to look like Henry Owens or Steven Wright will have to cover Rodriguez's turn in the rotation for a few weeks. The Red Sox don't need a fifth starter until April 10, so they do have a little wiggle room past Opening Day.