Organizational sources say Fernando Martinez is, in fact, expected to travel to Denver on Thursday.
There has been no official word whether Ike Davis is being placed on the DL, and sometimes minor leaguers are summoned as a precaution but not activated. Martinez was at Wednesday's Triple-A Buffalo game but was held out. He homered in each of his previous two games with the Bisons.
The arrival of Martinez, an outfielder, presumably would free Willie Harris to play second base with Justin Turner in any Davis absence, with Daniel Murphy then available to play first base.