Navarro went 2-for-3 with a walk and a run scored in the Royals' 6-2 victory. The 23-year-old was acquired in a trade with Boston on Saturday and manager Ned Yost liked what he saw firsthand when the Royals and Red Sox split a series in Boston last week.
In Thursday's 9-4 win over Baltimore, Navarro went 1-for-4 with a double, a run scored and three RBIs.
"He's really got some tools and you can project him being much better than a utility player," Yost said. "He's got a chance, at 23, with those tools."
Navarro is spot-starting for Mike Moustakas, who is getting a couple days off to work on his swing. Yost said Navarro will be used in a utility role like former Royals Wilson Betemit and Mike Aviles.
Yost said Navarro, who also plays shortstop, may start in place of Alcides Escobar for Sunday afternoon's game against the Tigers.