Conor Jackson has returned to Arizona to see an "infectious disease specialist" on Wednesday. His rehab assignment with Class A Visalia ended after 3 games where Jackson went 0 for 10. Jackson has been on the disabled list since May 12th with Coccidioidomycosis.
With the AAA season ending September 7th, his return to the team in September is now very much in jeopardy (though Josh Byrnes wouldn't say it's impossible, only saying "We'll see"). Also still questionable is Jackson's future with the team - because he is eligible for arbitration but not free agency, Diamondbacks have until mid-December to decide whether to offer him a contract. Last year, he avoided arbitration and signed a 1 year / $3.05mil contract.