Casper Wells was scratched from Monday's lineup due to back spasms.
It's not clear how long he might be sidelined. Wells is competing for a bench spot as a non-roster invitee.
Cubs prospect INF Arismendy Alcantara was 3-for-3 with his first spring home run on Sunday against the Mets.
Headed into the game, Alcantara, 22, was 0-for-12 in spring games, so his breakout performance on Sunday is certainly encouraging. Last season, the middle infielder batted .271/.352/.451 with 15 home runs and 31 stolen bases at Double-A Tennessee. Alcantara is likely to reach the major leagues at some point during the upcoming season, but keep in mind he has Javier Baez ahead of him on the organizational depth chart.
Nick Masset recently underwent surgery to have a staph infection removed from his right shoulder.
Staph infections can be scary, but Masset has returned to Rockies' camp and is back on schedule. The reliever thinks he still has time to get ready for Opening Day.
Mike Olt was scratched from Monday's lineup due to fatigue in right shoulder.
Olt has battled shoulder issues on and off all spring, but Cubs manager Rick Renteria isn't concerned. "We're looking to keep him healthy," the skipper said. Olt is expected to begin the season at Triple-A.
Cubs manager Rick Renteria said Monday that Starlin Castro (hamstring) continues to make progress and could make up for lost time with at-bats in minor league games.
Renteria has said previously that he was hoping Castro could return to Cactus League games this week. There doesn't appear to be much concern that the shortstop won't be ready for Opening Day as long as he can avoid setbacks.
Chase Headley (calf) is hoping to make his Cactus League debut on Thursday.
Headley faced live pitching over the weekend and felt fine. It's not clear how much, if any, running he's done, so he could be eased into game action in the designated hitter spot. The third baseman remains hopeful of getting ready in time for Opening Day.
Ross Detwiler is scheduled to throw one inning in Wednesday's game, with Taylor Jordan getting the start.
All three of Detwiler's previous Grapefruit League appearances have been starts, so it could be a sign that he's being transitioned over to a bullpen role. There's been speculation that this could happen, as Jerry Blevins is the only established left-hander in the Nationals' bullpen. It looks like the Nats' fifth starter will either be Jordan or Tanner Roark.
Padres manager Bud Black said Monday that the conversations he's had with Joe Wieland about his injury revolved more around the triceps area rather than the elbow.
Wieland dealt with triceps problems last year as he worked his way back from Tommy John surgery. Yahoo! Sports' Jeff Passan reported earlier Monday that the Padres had "significant concern" that Wieland might have re-tore his UCL, but it appears the issue involves another part of the arm. More will obviously be known when Wieland undergoes an MRI Monday.