The A's infield -- while we wait for the final determinant as to who the second base starter will be -- as of now looks unstoppable.
The left side particularly could create some fear in 2020 with Matt Chapman and Marcus Semien holding down the fort. But beyond the gloves, they're overall the top duo in the game.
In 2019, they combined to hold the top WAR in a group of top teammates across the league.
A 14.8 WAR between Chapman and Semien last season placed them just barely above Dodgers' Cody Bellinger and Max Muncy (14.