"I didn't say [Marmol] would not be the closer," Sveum said Wednesday. "I said it would come down to matchups."
Gregg's save was his first since 2011.
"Today was an awesome feeling," Gregg said after Tuesday's game. "I really enjoy that. That's a lot of weight on your shoulders when you're out there making pitches in that situation. I love that pressure, I love what comes with it, of what comes from being able to carry home a victory for the team."
• Kyuji Fujikawa, on the disabled list with a strained right forearm, is throwing from 135 feet on flat ground and has yet to throw a bullpen session. He is doing his rehab in Chicago.
• Ian Stewart was 0-for-4 with two strikeouts on Tuesday in a rehab start for Triple-A Iowa. Stewart is coming back from a strained left quad, suffered Feb. 21 in an intrasquad game. In seven games, he's 2-for-24 with a double and three RBIs.
• The Cubs and Rangers will play May 6 at 7:05 p.m. CT at Wrigley Field to make up a postponed Interleague game from April 17. It was one of two Cubs games postponed on the homestand; the Cubs also have a makeup game July 30 against the Brewers.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.