Since you can't go to the horses mouth if you're not sure how his name is pronounced, it's generally a good idea to check with the trainer...but not always.
As FOX41 Sports found this morning around the barn of Steve Asmussen's Derby contender. Spelled N E H R O, nobody seemed to be sure if it is NERO or NAYRO...or something else...and when we asked Asmussen even he wasn't sure. To the best of his and our knowledge, it is Nayro. However you say it, this is a horse garnering a lot of interest for his late-running second-place finishes the last two times out. He worked four furlongs in fifty-one and one.