Kilby (hamstring) began a rehab assignment in the Florida Complex League on Friday and went 0-for-1 with a walk and a run scored, Conor Foley of YES Network reports.
It was Kilby's first game action since May 28. The 19-year-old shortstop has been limited to just two contests this season and has yet to see any action with Single-A Tampa, the level he began his pro career at last year. Kilby slashed .353/.457/.441 with two doubles, two triples, nine RBI, 19 runs scored, 16 stolen bases and a 13:11 BB:K across 81 plate appearances after being the 39th pick in the 2025 First-Year Player Draft.