The two were spotted house-hunting in the area in August.
The 23-year-old Upton, who was born in Michigan and grew up in Florida, has a background in sports as a former equestrian competitor whose mother was a Texas state tennis champion and whose father is a high school athletics director.
They were first secretively together for a while before sharing their relationship with the world, especially via social media.
In their three-or-so years as a couple, Upton's star has continued to rise, annually gracing the pages of the Sports Illustrated swimsuit issue and as the advertising face of countless products.
Early photos from the event have Upton in a full-length silver evening gown, wearing a ring -- reportedly designed by Verlander -- but alone.
Verlander and the Tigers are off tonight, but begin a three-game series in Cleveland on Tuesday."I'm really excited, he asked me right before season started so we've been keeping it on the down low for quite a while," she said according E! "So I'm excited to finally be able to share it with the world."• Besides fame, car, famous girlfriend, Verlander a ‘normal dude’ ? Joseph, and Verlander, 33, in his 11th full season with the Tigers, met a few years ago while filming a video game commercial.