We put this on our Friday 15 Supporters Club podcast yesterday but I don't think we said anything about it on the site. Mantz confirmed to us he is racing, but said he is not targeting the American record.
No word on whether Mantz has a pro contract.
FYI, LRC offered to pay Mantz to wear our jersey in the race with a 5 figure bonus if he broke the American record. His agent Ray Flynn said, "Unfortunately this is not an option."