Former NBA prospect Isaiah Austin on his new dreamOn SI Now, former NBA prospect Isaiah Austin shares the most difficult part of being diagnosed with Marfan syndrome.SI Staff|Share on FacebookShare on XAdd us on On SI Now, former NBA prospect Isaiah Austin shares the most difficult part of being diagnosed with Marfan syndrome.Published Jun 23, 2015 | Modified Jun 23, 2015SI STAFFShare on FacebookShare on XHome/NBA