When free-agent outfielder Justin Upton reached agreement with the Detroit Tigers on a six-year, $132.75 million contract on Monday, he officially became the first Upton on the club's roster. But in reality, Justin is the Motor City Kitties' second Upton (in chronology and importance), as supermodel Kate, boyfriend to Detroit ace Justin Verlander, has been a de facto Tiger for years.

Well, this on-field/off-field synergy of Upton's was certainly noticed by Tigers fans, and as news of the deal spread, they justifiably rejoiced on Twitter. Here's some of the best (so far):

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