The 2026 T-Mobile MLB Home Run Derby is scheduled for Monday, July 13, at Citizens Bank Park in Philadelphia, with the event beginning at 8 p.m. ET. Multiple outlets report that the announced field is still forming, and only a portion of the eight-swinger lineup is confirmed so far. Rays’ Junior Caminero is the first participant officially confirmed for the derby, and he is noted as the 2025 runner-up. Coverage also points to a new format for the contest, though details of the change are referenced rather than fully agreed upon across these summaries. Several previews and trackers indicate that additional competitors are being identified as announcements come in, with one live-update and field-tracking report listing a power group that includes Bryce Harper, Kyle Schwarber, and Munetaka Murakami as part of the broader field being discussed as the lineup takes shape. Articles also note that viewers can find information on odds, predictions, and how to watch, including references to streaming coverage tied to the event’s broadcast partner. Overall, sources converge on the date, venue, start time, Caminero’s confirmation, the eight-player structure, and the ongoing announcement of the remaining competitors.