CHICAGO -- Cubs shortstop Addison Russell left the Cubs' 8-6 win over the Cardinals in Monday's Game 3 of the National League Division Series at Wrigley Field in the fourth inning with tightness in his left hamstring after sliding into third base on a triple.
After the game, Russell said his status is day to day. Cubs manager Joe Maddon said Russell will undergo tests Tuesday morning and his availability for Game 4 on Tuesday depends on the results.
"For right now we are absolutely not certain what the severity is," Maddon said.
Russell iced his leg, received treatment and planned to rest Monday night. The Cubs will reevaluate him before Game 4 on Tuesday. He said he will undergo an MRI only if the club's training staff feels it is necessary.
"It feels fine now," Russell said. "We're just going to wait and see how it goes overnight, come back in, I'll tell the trainers how I feel and we'll go from there."
After Starlin Castro's homer tied the game at 2 in the fourth, Russell knocked a fly ball to left field and sped around the bases, stumbling slightly after he rounded second before diving headfirst into third base.
At that point, Russell said, he felt a "little grab" in his left hamstring. He was removed from the game shortly after sliding safely into third.
"I don't want to put my team in a sticky situation where I play through it and I'm at shortstop," Russell said. "I just want to have my team set up for the best success, and I thought for the better of the team I should just stay up."
"At that point you're thinking, 'How bad is it? Can you still play?' I believe that I could still play," Russell said. "Like I said, I'm not really sure on some of the movements right now, but in the training room, I felt fine."
Baez played the rest of the game at shortstop and committed a potentially costly error on a play that could have ended the seventh inning.
Reliever Trevor Cahill struck out the first two batters he faced before giving up a single to Stephen Piscotty. Up came Matt Holliday, who reached safely on Baez's errant throw, pushing Piscotty into scoring position with Jason Heyward coming to the plate with a chance to tie the game.
But reliever Travis Wood got Heyward to line out to left field, escaping the inning unscathed.
Adam Berry is a reporter for MLB.com. Follow him on Twitter at @adamdberry. This story was not subject to the approval of Major League Baseball or its clubs.