UPDATE 4:09 p.m. Arrowhead Time

While the Chiefs provided no updates on Frank Clark’s medical condition, we got a tidbit of information through NFL Network reporter James Palmer through a series of tweets on Thursday afternoon.

First there was this one:

What I’ve gathered on Frank Clark and his stomach issue:

- They’re trying to get him as comfortable as possible

- He missed practice yesterday and today

- Team Docs have found a specialist for him to now see to find the issue.

- They're unsure if it’s virus related — James Palmer (@JamesPalmerTV) December 12, 2019

Then this one:

- Teammates did not think he was going to play vs Patriots

- The plane ride to New England was "terrible"

- Sunday showed Chiefs the "warrior" Clark is

- Everyone I've spoken with doesn't know if he'll play Sunday vs the Broncos — James Palmer (@JamesPalmerTV) December 12, 2019

And then... about 90 minutes later... this one:

I’m told there is a good chance Chiefs Frank Clark plays Sunday vs the Broncos. Clark is battling a stomach issue and was evaluated by specialists this week — James Palmer (@JamesPalmerTV) December 12, 2019

This suggests that there could have been some kind of breakthrough on the cause of Clark’s condition sometime on Thursday afternoon. But like Andy Reid says... we’ll see.

Frank Clark, Mo Claiborne, Rashad Fenton still not practicing Thursday

(Wednesday, Noon Arrowhead Time)

The Kansas City Chiefs are back at practice on Thursday, preparing to face the Denver Broncos at Arrowhead Stadium on Sunday.

CBs Rashad Fenton and Mo Claiborne and DE Frank Clark WILL NOT practice on Thursday. The #Chiefs say Clark is still being evaluated. No new updates. — Arrowhead Pride (@ArrowheadPride) December 12, 2019

Just like on Wednesday, cornerbacks Rashad Fenton amd Morris Claiborne — along with defensive end Frank Clark — are not practicing.

Clark’s situation is the one about which there is the most concern. Last week, he missed all of the team’s practices with what was presumed to be the flu. He played sick in the 23-16 victory against the New England Patriots on Sunday, but by Wednesday — with Clark not getting better — it was decided that he should see a specialist. So far, we have no more information on what is ailing him.

Neither Fenton or Claiborne practiced on Wednesday. Both were injured during the Oakland Raiders game in Week 13. Fenton has a hamstring issue, while Clairborne is dealing with a shoulder injury.

It’s excellent news, however, that running back Damien Williams — who was said to be “testing” his rib injury when he came back to practice on Wednesday — wasn’t mentioned. He was listed as having limited participation in Wednesday’s practice, but if he had any issues getting back on the field, we would expect to see him held out of practice the next day. Wiliams has missed two games since being injured against the Los Angeles Chargers in Week 11.

Linebacker Darron Lee was out of practice on Wednesday — officially designated as “not injury-related.” With no mention being made of him, it appears he is back at practice on Thursday.