Hernandez may be a late arrival to Astros camp due to a visa issue, Evan Drellich of the Houston Chronicle reports.Hernandez, who recently signed a minor league contract with the Astros on February 12, is trying to secure a work visa on a quick turnaround before pitchers and catchers report to camp on Friday. Manager A.J. Hinch is aware of the issue, but hasn't been told for sure that the veteran righty will be late to spring training.