"We had to activate Gomez," Indians manager Manny Acta said. "We have [Ezequiel Carrera] here who can play center field. We have [Austin] Kearns and we have [Travis] Buck, so it was a numbers game pretty much."
Gomez started on Sunday against the Orioles, replacing injured starter Mitch Talbot (back strain) in the rotation. Talbot was placed on the 15-day disabled list on Wednesday and Carrera was initially recalled to assume his spot on the Tribe's active roster.
For the time being, Carrera will remain with the Indians.
Duncan, 31, has hit .240 with three home runs, seven doubles, 11 runs scored and 20 RBIs in 36 games for Cleveland this season. In a previous stint with Columbus this year, Duncan hit .256 with two homers and 12 RBIs in 13 games.
"We're just trying to put the best team on the field on an everyday basis," Acta said. "He has contributed to our club over the last two years and we expect that, if the opportunity presents itself, that he'll contribute again. But there are no guarantees in this game."