Brito is currently in stable condition and will undergo more medical testing, the Phillies announced Tuesday.
He suffered a medical incident during Saturday's game with Triple-A Lehigh Valley, leaving the park in an ambulance. Brito was once seen as one of the more promising teenagers in the Phillies' system, and he had put his name back on the map this year with stellar showings at Double-A (122 wRC+) and Triple-A (154 wRC+). His girlfriend and his mother have arrived from Venezuela and are by his side, per the report.