Matt Olson is in Oakland because David DeJesus left the A's

As MLBTR’s Tim Dierkes wrote when DeJesus joined the Cubs, “DeJesus was offered arbitration by the A’s last week, so they’ll receive a supplemental draft pick in 2012 for their loss.”

This is where it gets good for the Athletics. With selection No. 47, the one Oakland received for DeJesus, it chose a Georgia-born high school first baseman named Matt Olson.

“The A’s see Olson as a future middle-of-the-order hitter,” Baseball America wrote at the time. And even though Olson was long a well-regarded part of the A’s system, he was never a premium prospect across the league. Now, however, he’s one of the most valuable players on the A’s and among the most well-rounded first basemen in the sport.

After a run as a productive minor leaguer, Olson made it to Oakland in 2016, although he struggled over a mere 26 plate appearances. The next season, however, Olson turned into a monster at the MLB level. The lefty swinger racked up 216 PA and slashed .259/.352/.651 (164 wRC+) with 24 home runs. To this point, that has been Olson’s lone elite showing as a hitter, but that’s not to say he hasn’t been easily above average since then. Dating back to 2018, Olson has slashed .256/.342/.495 (126 wRC+) with 65 homers over 1,207 PA. Those numbers, not to mention his all-world defense, helped him post 7.3 fWAR during the previous two seasons.

Among all major leaguers dating back to 2018, Olson ranks seventh in Ultimate Zone Rating (18.1) and eighth in Defensive Runs Saved (31). One of the few better defenders than Olson has been teammate and third baseman Matt Chapman. He and Olson comprise one of the premier corner infield tandems in the game, and they’ve done it at affordable prices for low-budget Oakland. That’s going to start changing soon – both players will enter arbitration for the first of three potential trips next winter. Whether the A’s will be able to keep either around beyond their arb years remains to be seen, but there’s no denying they’ve already gotten excellent value from the two. In Olson’s case, it all began with a trade that didn’t bring potentially strong returns in the beginning.