Sale (elbow) threw 20 pitches off the mound Wednesday, Alex Speier of The Boston Globe reports.
According to manager Alex Cora, Sale threw mostly fastballs and changeups. He also mixed in three sliders, only one of which was on target. An early-to-mid-summer return timeline remains feasible for Sale, but he'll certainly need to regain his signature slider before progressing further and beginning rehab assignments.