On June 6, 2017, Gennett hit a record-tying four home runs (including a grand slam) and had a career-high 10 RBI against the St. Louis Cardinals. He is the 17th player in MLB history and first in Reds history to hit four home runs in a game, and the seventh to hit home runs in four consecutive at bats in the same game. In the same game, he set a club record with 17 total bases.

This game used Franklin batting glove was signed in blue by Gennett and inscribed, "Game Used 2012." This item includes an Onyx sticker and COA.