Red Sox fans have had enough — they want major changes to this ballclub.

A plane flew over Fenway Park in Boston on Friday as the Red Sox took batting practice that carried a banner that read: “FIRE CRAIG! SELL THE TEAM!”

According to the Boston Herald, the plane, which included an Underdog logo on the banner, flew near the ballpark for about an hour but left the airspace before the start of the Red Sox’s 3-1 victory over the Astros.

“The fans deserve to be heard,” a rep for Underdog, a sports betting company, told the Herald, “we want to amplify their voices.”

The message took aim at chief baseball officer Craig Breslow and owner John Henry, both of whom have come under fire amid the team’s 13-19 start.

Last Saturday, after a 17-1 win over the Orioles, Red Sox leadership decided to make sweeping changes by firing manager Alex Cora and four of his coaches — and reassigning one, Jason Varitek, within the organization — in hopes of turning a season that has seen the team sink to last place in the American League East. Chad Tracy has taken over in the interim.

It’s been an incredibly underwhelming start, considering the the fact the team made the playoffs last season as a wild card and most projections had the Red Sox doing the same this season, or least being competitive in the AL.

But many pieces of the young core, including Roman Anthony, Marcelo Mayer and Jarren Duran, have all struggled at the plate, and Caleb Durbin, acquired in a trade with the Brewers to be the de facto Alex Bregman replacement at third base, has struggled mightily with a .176 average. Making matters worse is that left-handed pitcher Kyle Harrison, who was sent to Milwaukee in the Durbin trade, has a 2.28 ERA across five starts.

“I think everyone’s still kind of adjusting to everything that went down and transpired last week,” Durbin told the Boston Globe this week of the firings. “But as a player, you’re just getting ready to play in a couple hours. You show up to the ballpark and it’s business-as-usual. It has to be that way. Over time, everything will kind of settle down and kind of normalize.”

Things only got tougher this week when ace pitcher Garrett Crochet landed on the 15-day injured list with shoulder inflammation.

Boston is 3-2 since Cora’s firing.