versus Milwaukee to fuel a 3–2 win, giving him five home runs over his previous six games. Batting .279 with 13 home runs, Molina was named to the 2018 MLB All-Star Game to replace the injured Buster Posey. He finished his 2018 campaign batting .261 with twenty home runs and 74 RBIs in 123 games. He had the highest fielding percentage among major league catchers, at .998. He won his ninth Gold Glove. 2019 On Opening Day 2019, versus the Brewers, Molina extended his team-record for Opening Day starts with 15. He made his first career appearance at third base in extra innings of a 6−5 win on April 1 versus the Pirates. The Cardinals were in need of infield depth with an injury to regular utility infielder Jedd Gyorko. He was placed on the injured list on May 31 with a thumb tendon strain. For the 2019 season, Molina batted .270/.312/.399 with ten home runs and 57 RBIs over 113 games. He batted .143 in the NLCS and .167 in the NLDS. He had the slowest sprint speed of all National League players, at 22.8 feet/second. On October 9, Molina set the record for the most appearances by a National League player in post-season MLB play, at ninety-four games. He was nominated for a Gold Glove. 2020 In 2020, Molina made his 16th consecutive Opening Day start. On August 4, it was announced that Molina had tested positive for COVID-19, and he was subsequently placed on the injured list. Molina would eventually recover from the disease. On September 24, against the Milwaukee Brewers, he singled to right-center field for his 2,000th career hit. For the season, he batted a slash line of .262/.303/.359, with four home runs and 16 RBIs. He was the second-oldest player in the NL, and had the slowest sprint speed of all major league catchers, at 23.0 feet per second. On defense, he led all NL catchers in errors, with five. At the end of the 2020 season, Molina entered into free agency for the first time in his career. 2021 In 2021, Molina returned temporarily to Puerto Rico to play in the Liga de Béisbol Profesional Roberto Clemente to play as a reinforcement with the Atenienses de Manatí in the semifinals. However, his participation was shadowed by the poor performance of the team, resulting in a sweeping 4-0 series with the Indios de Mayagüez.