The Mariners and Diamondbacks are seeking public money toward upgrades for ballparks that are five and six years older, respectively, than Petco Park.
![](https://www.ballparksofbaseball.com/wp-content/uploads/2018/08/sd-1533266636-zmd4l5lcvt-snap-image.jpg)
The Mariners and Diamondbacks are seeking public money toward upgrades for ballparks that are five and six years older, respectively, than Petco Park.