He missed more than a month because of a strained right quadriceps muscle. The first baseman and designated hitter just completed a rehab stint with Triple-A Buffalo and hit a grand slam in his first game.
Encarnacion is a two-time All-Star and is hitting .277 with 26 home runs and 70 RBIs this season.
The Blue Jays have lost four in a row and dropped back in the AL wild-card race. First baseman Adam Lind recently came off the DL while third baseman Brett Lawrie is out until at least September because of a strained left oblique.
Gose is hitting .234 with nine RBIs and 14 stolen bases in 69 games.
Information from the Associated Press was used in this report.