San Diego Padres injury news: Michael Wacha, Robert Suarez, Luis Campusano

Let's take a look at some of the latest injury news surrounding the San Diego Padres, including what's going on with Michael Wacha and updates on Robert Suarez and Luis Campusano.

San Diego Padres injury news: Michael Wacha

Wacha will have his turn skipped in the rotation on Saturday as the Padres have called up knuckleballer Matt Waldron to make his MLB debut against the Washington Nationals. The 26-year-old right-hander has appeared in 14 games (12 starts) this season at Triple-A El Paso, logging a 7.02 ERA and 1.65 WHIP in 66.2 innings.

Padres manager Bob Melvin told the media on Friday that Wacha was dealing with "shoulder fatigue" and that the Padres were skipping his start "to be proactive." Wacha has made 14 starts this season, sporting a 2.90 ERA/3.78 FIP/1.054 WHIP over 80.2 innings.

Melvin seemed hopeful that skipping a start would help Wacha's shoulder get right before the All-Star break.

San Diego Padres injury news: Robert Suarez

Called by MLB insider Jim Bowden as one of the keys for the Padres in the second half of the season, Suarez looks to be on track to make his season debut soon after landing on the 60-day injured list with right elbow inflammation.

The 32-year-old right-hander reportedly threw a bullpen session on Friday and Melvin said hecould face hitters "imminently." That's a very good sign for the Padres, who could use Suarez back in the bullpen as a late-inning option.

Expect Suarez to head out on a minor league rehab assignment and, when healthy, return to the Padres bullpen. Whether or not that will be before the All-Star break remains to be seen.

San Diego Padres injury news: Luis Campusano

Long before the Padres acquired Gary Sanchez, there was hope behind the plate in the form of the 24-year-old Campusano. However, a left thumb sprain and subsequent surgery derailed those hopes.

Now, it appears that Campusano is taking steps to play in his first game for the Padres since April 14. According to reports, Campusano will will catch a bullpen session on Saturday. He has also begun taking full swings, both moves that Melvin called "significant."