Rockies outfield prospect David Dahl underwent a splenectomy on Monday.
Had Dahl waited for his lacerated spleen to heal he likely would be missed the remainder of the season. Having it removed means he'll make it back this year, although it's unclear when that is likely to happen. Ranked before the season by Baseball America as the No. 22 prospect in the game, Dahl has batted .269/.296/.379 with three homers and 14 steals at Double-A New Britain this season.
Dilson Herrera (finger) has begun swinging a bat lightly.
He's also begun throwing. Herrera was unable to grip a bat or baseball just a week ago, so he appears to have made big strides with his fractured right middle finger since then. There remains no timetable for his return.
Astros shortstop prospect Carlos Correa was held out of Triple-A Fresno's lineup Monday due to a sore right heel.
Correa injured the heel on a slide home Sunday. His absence from the lineup is viewed as precautionary, so consider the top prospect day-to-day. Correa is hitting .327/.398/.607 with 10 homers, 41 RBI and 18 steals between Double- and Triple-A this season and is expected to make his major league debut before long.
Diamondbacks activated RHP Matt Stites from the 15-day disabled list; optioned him to Triple-A Reno.
Stites has allowed three runs -- two earned -- over 1 1/3 rehab innings while working his way back from a strained right flexor tendon. He should join the Diamondbacks' bullpen at some point as long as he's healthy.
Desmond Jennings (knee) had a few at-bats in an extended spring training game Monday.
It's his first game action since he landed on the disabled list in late April with left knee bursitis. The bad news is that Rays manager Kevin Cash said Jennings "still felt something" in his knee during the game. It's unclear whether he'll continue to keep playing in extended spring or if the Rays will pump the breaks a bit. Jennings has been out since late April.
Matt Moore (elbow) will begin a rehab assignment with High-A Charlotte on Wednesday.
Moore was cleared for official game work after getting through a 46-pitch extended spring appearance last Thursday. He's slated to make 5-6 rehab starts, putting him on track to return possibly before the end of the month. The left-hander is worth stashing away now if you have space on your roster.
Corey Dickerson (foot) ran the bases on Monday.
Dickerson was placed on the disabled list two weeks ago due to plantar fasciitis in his left foot, an ailment that had bothered him throughout the season. Although running the bases is a nice step, there remains no timetable for his return. Dickerson has hit .306/.342/.523 with five homers over 33 games this season.
Travis d'Arnaud (finger) could resume his rehab assignment later this week.
D'Arnaud had been slated to return this week after missing over a month with a fractured right pinkie finger, but he had a setback last week with a bone bruise in his wrist. It sounds like the setback was minor, though, so the young catcher could be back in the Mets' lineup before long.