CHICAGO -- The Matt Holliday investigation will continue away from the team and in New York.



That's where the Yankees designated hitter will see more doctors and have more tests to determine what's zapped his energy and kept him out of the lineup since Saturday.



The Yankees put him on the disabled list Wednesday, brought up third baseman Miguel Andujar from Triple-A Scranton/Wilkes-Barre and slotted Andujar into Holliday's DH spot against the White Sox at Guaranteed Rate Field.

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"We're not seeing much improvement and out biggest concern is with the fatigue factor and him not eating a lot, even if he did start to feel better it would take three or four days to get his strength back.," Girardi said.



The manager added that Holliday also looks ill and that doctors have ruled out mononucleosis.



"His eyes are kind of sagging back, you know that look at that you get. It just doesn't look like a very energetic person," Girardi said.



Holliday has been huge for the Yankees since signing a one-year, $13-million deal in the offseason. He has a .262 batting average with 15 home runs and 47 RBI.



Here's a few more Yankees injury notes:



Righty Adam Warren threw from the mound for the first time since going on the disabled list with right shoulder inflammation June 16. He threw 20 pitches and hopes to do one more mound workout before the team activates him, possibly next week in New York.



Lefty starting pitcher CC Sabathia was set to throw a simulated game Wednesday but the rain pushed it back to Thursday. Sabathia has been on the DL with a strained right hamstring since June 15.

Girardi told me there is concern that Bird doesn't make it back this season. Still has soreness in foot/ankle #yankees — Meredith Marakovits (@M_Marakovits) June 28, 2017

Brendan Kuty may be reached at bkuty@njadvancemedia.com. Follow him on Twitter @BrendanKutyNJ. Find NJ.com Yankees on Facebook.