X-rays revealed a fracture, and Wigginton was scheduled to see team physician Dr. Koco Eaton on Monday.
"That's tough," Devil Rays manager Joe Maddon said. "Ty has made a big impact on all of us this year."
A gritty, versatile player, Wigginton has started at five positions for Tampa Bay this season. Most of his playing time has been split between second base, third and first, though he's also started six games in the outfield.
He is batting .267 with a career-high 18 homers and a team-leading 19 doubles, just a few reasons Maddon said Wigginton is perhaps the player he can least afford to do without.
"The level that he's been playing at and the way he plays is infectious," Maddon said. "He personifies the way we want to play this game."
Wigginton went 1-for-2 with a double and scored twice in Tampa Bay's 19-6 victory Saturday. He has a career-best 10-game hitting streak since missing four games from July 15-18 with a strained back.