What happened: The Baltimore Orioles placed right-hander Chris Bassitt on the 15-day injured list with low back discomfort, retroactive to June 5. In a corresponding move, the club recalled RHP Trey Gibson, their No. 4 ranked prospect, from Triple-A Norfolk to start tonight's game against Seattle. Additionally, RHP Eduarniel Núñez was claimed off waivers by the Chicago Cubs.

Why it matters: Losing Bassitt is a blow to an Orioles rotation already hampered by injuries, forcing the team to accelerate the timeline for prospect Trey Gibson. With a 31-35 record, Baltimore needs stability in their starting staff to stay competitive in the AL East race. The departure of Núñez further thins the team's depth as they navigate a challenging stretch of the regular season.

What to watch: Trey Gibson makes his highly anticipated start tonight against the Seattle Mariners as Baltimore kicks off the series.