and feeding difficulties in infancy. His motor development was delayed, having walked independently at 22 months of age. At 3 years-old he spoke single words and at 4 years-old he spoke sentences. He never learned to write or to read. Since infancy he has had recurring bouts of vomiting. Colonoscopy revealed a polypoid mucosa in the terminal ileum and chronic enteritis. Ophthalmologic exams showed myopia, with normal fundus. Echocardiography and nuclear magnetic resonance of the brain were normal.

He was evaluated by a geneticist at 20 years of age, when his weight was 68.5 kg (25-50th centile), height 161 cm (\< 3rd percentile) and OFC 53 cm (\< 3rd percentile). Besides the short stature, his phenotype had several features reminiscent of Noonan Syndrome, including intellectual disability, ptosis, low hairlineComing into the 2017 season, Luis Severino was a divisive topic of conversation for Yankee fans, writers, and probably even the Yankee organization. After last season's disastrous results as a starting pitcher, resulting in his temporary demotion and part-time assignment to the Major League bullpen, Luis Severino was an enigma. Given his substantial success as a reliever during his brief appearances in that role, throwing high nineties heat to pair with a wipe-out slider, many wanted to permanently convert Severino into a reliever, thus allowing the Yankees to turn many games into six-inning affairs with Severino, Betances, and Chapman shutting the door in innings 7-9. Others pointed to Severino's age, previous success as a starter in 2017, former prospect status, and the prior quality of his change-up as