Yankees deal with possible food-borne illness as McMahon misses Double-A rehab start

New York Yankees manager Aaron Boone said the organization was dealing with what he described as an outbreak of food poisoning, a development that disrupted at least one planned rehab appearance on Wednesday. Ryan McMahon, who had been set to begin a Minor League rehab assignment with Double-A Somerset, was scratched from the scheduled outing, per Boone’s comments reported by.

McMahon’s adjustment matters because rehab assignments are typically used to measure a player’s health and readiness in game conditions. When a rehab start is altered, it can shift the timeline for a return to the Yankees’ major-league roster, especially if further testing or rest is needed before the next attempt.

Boone’s remarks also linked the illness concern to other Yankees-affiliated players. reported that Spencer Jones was among those potentially dealing with the condition, placing additional caution around day-to-day plans at the organizational level while the team assesses symptoms and recovery.

Not every planned appearance was cancelled. Trent Grisham remained on track to play for Double-A Somerset against Hartford, with reporting that the game’s first pitch was scheduled for Wednesday. That contrast suggests the Yankees were separating affected players from those cleared to participate, rather than shutting down Somerset’s slate entirely.

The Yankees’ minor-league framework provides a key runway for major-league depth, and Somerset’s schedule is one of the clearer indicators of how soon specific players might be able to progress. With McMahon sidelined from the planned rehab step, the next question becomes whether he can resume at the next available opportunity, and whether Somerset’s lineup or workload plans change if other players report the same symptoms.

For Yankees fans, the immediate takeaway is procedural, not competitive. Rehab and assignment decisions are often fluid when illness emerges, and Boone’s comments frame this as a situation the team is actively managing. The Yankees will look for signs of recovery and stability before pushing any player back toward major-league action.