Can you solve this baseball nickname-themed 'Jeopardy' clue?

Quick, you're on "Jeopardy" and all that stands between you and earning Alex Trebek's eternal respect (and avoiding his cold-eyed disapproval) is the $800 clue you see above: 

Yo, @Jeopardy. The #Phillies thank you for the $800 question last night! Or was it an answer? Clue? pic.twitter.com/LGsLSEXfy8

- Phillies (@Phillies) April 3, 2015

Did you say "Who are the Phillies?" Cool, I did too, but here's the thing: I was actually on "Jeopardy" and, unfortunately, this was not my episode. Look at me: 

Tomorrow's my @Jeopardy day. PS this is the happiest I'll ever be: pic.twitter.com/ZimKFJknWx

- Gemma Kaneko (@GemmaKaneko) February 22, 2015

I was so happy! That's before I got categories like "Harlequin Romance Novel Titles 2014" and "17-Letter Words."

Since none of Thursday night's contestants got this one right (just you and I, reader), it was definitely hard. Maybe it should have been Final Jeopardy on my show, and then I could have taken you all out for ice cream on Opening Day. But it wasn't, I lost, and now no one gets ice cream.