With the duo dropping out of the team and squad, the Blues explained: "Both injured.
"Omari picked up something on his first session back from international duty (with England U21s), we don't know how long that will be.
"Leif has a bit of a strange one and is still being assessed on what exactly it is and the timescale."
Asked what the respective injuries were, he added: "Leif is his leg and Omari is his hamstring."
Ben Johnson replaced Hutchinson on the right tonight, while Conor Townsend stepped in for Davis at left-back.