Stewart went 2-for-5 with a solo home run in Sunday's 7-5 win over the Cubs.
Stewart pummeled an elevated sweeper from Trent Thornton to straightaway center field for a solo homer in the seventh inning. The 22-year-old slugger has now homered in three straight games and in four of his past five contests. Through 137 games, Stewart is slashing .266/.338/.489 with 31 homers, 105 RBI, 79 runs and 12 stolen bases as he makes a compelling case for National League Rookie of the Year honors.