Montgomery (finger) will throw a bullpen session Saturday, Alex Weiner of ArizonaSports.com reports.

Montgomery will have his strained left index finger examined Wednesday, Alex Weiner of Arizona Sports reports.

Montgomery (finger) is scheduled to have a throwing session Tuesday or Wednesday, Jack Sommers of SI.com reports.

Imaging revealed a strain in Montgomery's left index finger Thursday, Alex Weiner of ArizonaSports.com reports.

Montgomery said Thursday that he's lost 20 to 25 pounds over the offseason, Alex Weiner of ArizonaSports.com reports.

Montgomery didn't factor in the decision Sunday against the Brewers after giving up three runs on six hits with six strikeouts and two walks over 4.1 innings.

Montgomery is slated to start Tuesday's game against the Rockies at Coors Field, Jesse Friedman of GoPHNX.com reports.

Montgomery is expected to re-enter the rotation as a replacement for Ryne Nelson (shoulder), Alex Weiner of Arizona Sports reports.

Montgomery recorded his first career save in Wednesday's 14-4 rout of the Rangers, giving up two hits and a walk over three scoreless innings of relief.

Montgomery (lower leg) made a relief appearance in Friday's 8-0 loss to the Astros, giving up four earned runs on four hits and one walk while striking out three.