Felix Hernandez Mariners extension in jeopardy due to elbow problem

Felix Hernandez's contract extension might be in doubt. (Stephen Brashear, Getty Images)

The seven-year, $175 million contract extension the Seattle Mariners were prepared to offer pitcher Felix Hernandez may have hit a snag.

According to a report from ESPN's Buster Olney, the Mariners have developed concern about the status of Hernandez's pitching elbow, and negotiations over the contract extension have hit a snag because of that.

CBS Sports' Jon Heyman reports in a tweet that the negotiations could take a little while to be complete:

https://twitter.com/JonHeymanCBS/status/300720242269749248