Francoeur belted a 0-1 pitch from Tigers rookie Jacob Turner, a 20-year-old right-hander, into the left-field seats in the second inning of the Royals' 11-8 victory on Thursday. His 16th homer of the season came with Eric Hosmer on base after a leadoff single.
"He told us he was going to get it in his first at-bat and he did, he didn't mess around with it," manager Ned Yost said.
The hit was Francoeur's 144th this season, his first year with the Royals. He also had 653 hits for the Braves, 185 for the Mets and 18 for the Rangers.
For Francoeur, the best part was hit got two more hits and another RBI in the win.
"It's a lot more enjoyable when you win a game like this," he said.