Rengifo is in the starting lineup for Thursday's game against the Mariners, batting ninth and playing second base.
Rengifo was activated from the 10-day injured list Tuesday after dealing with a hamstring injury suffered during summer camp in mid-July. The 23-year-old was going to have a tough time finding consistent playing time in the Halos' crowded infield, but with Andrelton Simmons placed on the 10-day injured list Tuesday, Rengifo will likely see his fair share of time at the keystone in the coming days as David Fletcher shifts to shortstop.