The Diamondbacks reinstated Nelson (shoulder) from the 15-day injured list Thursday, Alex Weiner of ArizonaSports.com reports

Nelson (shoulder) threw 28 pitches in a bullpen session Tuesday, MLB.com reports.

Nelson (shoulder) is scheduled to throw a 25-pitch bullpen session Tuesday, Jesse Friedman of GoPHNX.com reports.

Nelson (shoulder) will throw a bullpen session Saturday, Nick Piecoro of The Arizona Republic reports.

The Diamondbacks placed Nelson on the 15-day injured list Saturday with right shoulder inflammation, Jesse Friedman of GoPHNX.com reports.

Nelson did not factor into the decision in Sunday's win over the Astros, allowing five runs on six hits and two walks while striking out four over 4.2 innings.

Nelson (10-6) got the win over the Giants on Tuesday, allowing two runs on four hits and two walks while striking out nine over 6.2 innings.

Nelson will remain in the Diamondbacks' rotation following the demotion of Jordan Montgomery to the bullpen, John Gambadoro of 98.7 FM Phoenix reports.

Diamondbacks manager Torey Lovullo said Wednesday that Nelson is tentatively scheduled to start Friday's game against the Red Sox, Steve Gilbert of MLB.com reports.

Nelson did not factor into the decision in Friday's loss to the Rays, allowing one run on five hits and no walks over 6.1 innings. He struck out six.