Dahl was involved in a collision with Double-A teammate Juan Ciriaco during the New Britain Rock Cats' 9-5 victory over the Altoona Curve. Dahl was immediately taken to a local hospital, where it was determined that surgery would be needed to fix a tear in his spleen. The 21-year-old outfielder also likely suffered a concussion in the collision, his father told AL.com, though that no longer appears true.
On Friday afternoon, Rockies senior director of player development Zach Wilson issued a statement on Dahl's condition:
For the remainder of his career, Dahl might have to wear protective equipment under his uniform to protect the area affected by the surgery, per Passan.
Dahl was 2-for-3 at the plate prior to the injury. After a slow start to the season, he hit .307/.320/.436 in May, just his second month in Double-A. Dahl is nearly four years younger than the average Eastern League player, according to Baseball-Reference.
This season marks the second time in which Dahl will miss the majority of a minor league season. The Rockies' first pick in the 2012 draft played in only 10 games in 2013 before suffering a season-ending hamstring injury.