In the sixth inning of the Blue Jays' eventual 6-1 win over the Twinson Saturday, Toronto second baseman Marcus Semien hit his 43rd home run of the 2021 season. 

As the caption says, that blast means Semien is now tied for the most home runs in a season by a second baseman. He's atop that list with Davey Johnson, who also hit 43 out as the Braves' second baseman in 1973. Prior to this, Semien had been in a three-way tie for second place at 42 with Brian Dozier in 2016 and Rogers Hornsby in 1922. 

When we discuss home runs by a player at a certain position, we usually mean those who played at least 75 percent of their games in a given season at that position.