City Royals, Molina came in with two outs and the bases loaded. After drawing a 1–0 count against Peter Moylan, a brief delay occurred when a stray kitten had made its way onto the outfield. On the very next pitch to Molina, he hit it 387 feet into the left field seats for a go-ahead grand slam. This was the fifth grand slam of his career, tying him with Tim McCarver for second-most career grand slams by a Cardinals catcher. This also proved to be the deciding hit in this game, as the Cardinals held up to win, 8–5. On September 19, Molina tied Jim Bottomley (1922–1932) for 10th place in Cardinals history with 1,727 hits. Molina led the team in 2017 with 134 hits and 78 RBIs, and all NL catchers in both categories, entering play on that date. He broke the tie with Bottomley on September 20, with his 1,728th hit, and tied his own career-high RBI total for a season with 80, reached in 2013. He passed 80 on September 21, with his 81st and 82nd RBI. He was the 2017 recipient of the Missouri Athletic Club's Sports Personality of the Year Award. 2018 In January 2018, Molina expressed his plan to retire following the 2020 season when his contract would expire. As batterymates, Wainwright and Molina had accumulated more starts together than any other in franchise history. He passed Bench for two milestones early in the season: for 13th place in major league history in innings caught with on April 14 while playing the Cincinnati Reds, and 16th in games caught versus with 1,743 on May 2 versus the Chicago White Sox. Molina doubled versus Cincinnati on April 22 to give him 338 for his career and tie Ozzie Smith for tenth place in Cardinals' history. On May 5, Molina exited the game after a foul tip struck him in the groin. The next day, on May 6, Molina underwent emergency surgery for a pelvic injury with traumatic hematoma. The Cardinals activated Molina from the DL on June 5. On June 19, he set the major league record for most games caught with one team with 1,757, passing Gabby Hartnett who had previously held the record as a member of the Cubs. Molina homered twice in a loss to Philadelphia on June 20 for his fifth career multihomer game. He homered twice again on June 23