While Teahen was unsure of how long the injury would keep him out, general manager Kenny Williams and manager Ozzie Guillen both estimated that Teahen would miss about one month.
"He's got a finger," Williams said. "Four weeks, at least, away. Gotta make do without him."
Teahen injured his figure on May 30 while fielding a ground ball off the bat of Rays third baseman Evan Longoria. It appeared to be a routine play, but the ball went up a little higher than Teahen was expecting, and it clipped the middle finger on his throwing hand.
"It just happened on a ground ball," Teahen said. "It happens a lot, when it hits you in your throwing hand. It caught me wrong, I guess. I've never broken a bone in my body before."
The injury to the tip of his middle finger takes out the White Sox third baseman just when he was beginning to heat up for the South Siders.
In the 12 games preceding the injury, Teahen batted .368 with seven RBIs and three doubles.
"It's frustrating," said Teahen of the timing. "Things didn't start the way I wanted to and [I] finally started [to get] on a roll the past couple weeks and got it going to where I wanted to be. It's a setback, I guess, but hopefully it heals quickly."
In his stead, the White Sox are going to use Jayson Nix and Omar Vizquel as stopgaps at third base and don't plan to pursue a trade for a third baseman.
Vizquel started on Tuesday, ostensibly to get his glove behind lefty Mark Buehrle, who is famous for pitching to contact. Nix replaced Teahen on Monday, following the injury.
"We may platoon Vizquel and Nix for now just to see how they play," manger Ozzie Guillen said. "I am fully confident in what they can do. Hopefully, it will work out. It's not worth it to go out and bring in somebody to play for a month, then we don't know what we're going to do with them. I feel comfortable with them. Hopefully, they play well. Now they have an opportunity. Hopefully, they take advantage of the opportunity."
As far as his recovery time, Teahen did not want to label it definitively.
"Thursday, they're going to put a pin in to help it heal properly," he said. "I guess we'll know more after that."
Louie Horvath is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.