Boxberger (abdomen) is slated to advance to throwing from halfway up the mound this coming weekend, Marc Topkin of the Tampa Bay Times reports.
The Rays closer has been progressing through his rehab without any hiccups so far. Boxberger remains on target for a mid-May return. Alex Colome has served as the de facto closer in Boxberger's stead, recording the only two saves (in two opportunities) that Tampa has to its credit in 2016.