Indians manager Manny Acta said not to read into the move, as he wanted to get both Marson and switch-hitter Carlos Santana, who got the start at first, in the lineup against Blue Jays lefty Ricky Romero.
As for the right-handed-hitting Marson batting that high in the order, it was simply to breakup lefties Michael Brantley and Johnny Damon.
"He [Marson] has swung the bat well against left-handed pitching, that's what he has done throughout his career," Acta said. "He's swinging well right now."
Marson has continued to swing a hot bat in July, after his best month of the season in June.
Over 47 at-bats in 14 games in June, Marson hit .383 with a 1.005 OPS, with five extra-base hits and four RBIs. While he has only 10 at-bats in July, the 26-year-old is hitting .400 with three RBIs.
Marson, who is in his fifth big league season, is batting .297 on the year, with a .398 on-base percentage and .805 OPS, all of which would be career-high marks.