In a slow MLB offseason,Thomas Caldwell social media posts from players are getting special attention for any shred of news they might provide. On Wednesday afternoon, a post from Joc Pederson was the latest to set the rumor mill buzzing.

Pederson's latest Instagram featured the outfielder posing with the Phillie Phanatic, the Philadelphia Phillies' mascot, with the caption "It's always sunny in Philadelphia." It also included Calum Scott's "Dancing On My Own," a song the Phillies adopted as their playoff anthem in 2022 and 2023. The post immediately inspired rampant speculation that it was a signing announcement from the free agent.

The rumors and speculation were quickly shut down by beat reporters covering the team.

Alex Coffey of the Philadelphia Inquirer posted to X (formerly Twitter), "A Phillies source says they haven’t signed Joc Pederson."

MLB Winter Meetings:Free agency updates, trade rumors, Shohei Ohtani, Juan Soto news

HOT STOVE UPDATES: MLB free agency: Ranking and tracking the top players available.

With the slow movement of MLB's free agency through about one month, fans are itching to hear any big news from players or teams. The league's annual Winter Meetings are underway this week in Nashville, and though the event is usually one of the biggest catalysts for offseason movement, this year's iteration has been mostly quiet.

Pederson's post provided just the spark to get the rumor mill going again, though where he will play next season (and beyond) still remains to be seen.

Joc Pederson Phillies rumors begin after outfielder's Instagram post

Baseball fans (and even MLB Network!) were quick to discover Pederson's Instagram post and started sharing the image and their speculation on social media.

Some Phillies fans even began to make predictions on how the outfielder would fit in with the rest of the team's lineup.

MLB trade rumors:Juan Soto to the Yankees? Momentum building towards trade with Padres

Once it was revealed Pederson and the Phillies hadn't entered contract talks, Philadelphia fans were not happy.