The classic rockers have refused to offer a reason for the cancellations in Pennsylvania on June 14 and 15, but the band has only just returned to the road after scrapping a string of shows to allow bassist Timothy B. Schmit to recover from unexpected surgery.
The group cancelled a handful of concerts when Schmit fell ill. He underwent surgery on May 14.
Performing at the Pepsi Center in Denver, Colorado on Thursday night, Schmit took a moment to acknowledge a friend in the audience, coyly revealing, "He's partially responsible for me being here tonight."
He then dedicated Love Will Keep Us Alive to Poco star Richie Furay.