Well just by the math we have the following:
AZ: 2.7 mil counted. It says 86% counted, but lets play it safe and say 80%. That would be about 540,000 votes, Biden is up 90k. Trump would need to win 320k to 220k to win.. Certainly possible, but most of the Blue counties are sub 90% reporting. Biden just needs to break even with the rest of the vote.
Right now over 50% of AZ is coming from 2 counties, Pima and Maricopa. Biden is leads in both of those counties and both are reporting under 90%.
Anything is possible and who knows what hasnt been reported, but the numbers that are unreported are objectively better for Biden than Trump.