Maybin sustained the injury while making a running catch to rob Nick Markakis of a hit in the third inning of the Halos' 6-3 loss on Monday. Maybin chased down a fly ball in the left-center field gap and then tumbled to the ground after making the play.
"Cam was a little tight in his side after he got here from the dive in left field," Scioscia said. "We'll see how it sets up, but hopefully it's just a day-to-day thing."
Scioscia said there are no current plans for Maybin to undergo further medical examination.
Maybin, 30, is batting .242 with a .736 OPS, three home runs, 12 RBIs and 13 stolen bases this season and had recently emerged as a key offensive catalyst in the leadoff spot. With Trout injured, Maybin is expected to take over the primary duties in center field, though Eric Young Jr. received the start there Tuesday.
Young, who was called up from Triple-A Salt Lake after Trout was placed on the disabled list, played left on Monday and went 1-for-4 with two stolen bases.
"He brings some energy," Scioscia said. "I think EY is just a chip off his dad's shoulder. He plays the game with passion. You saw him run the bases, he's aggressive. He was doing a great job down in Triple-A. He'll hopefully bring a little energy to our lineup."
• The Angels received some positive injury news, as third baseman Yunel Escobar is slated to play in a rehab game with Class A Advanced Inland Empire on Wednesday and could "very easily" be activated on Thursday, Scioscia said. Escobar was batting .266 with a .723 OPS before landing on the disabled list on May 15 with a left hamstring strain.
• The Angels expect to slide Alex Meyer (back spasms) back into their rotation on Thursday in their series opener against the Twins, which will give the rest of their starters an extra day of rest. The Halos acquired Meyer and Ricky Nolasco from Minnesota last summer in exchange for Hector Santiago and Alan Busenitz.
• Right-hander Huston Street (lat strain) said he believes he will pitch in a rehab game for Inland Empire on Thursday or Friday and is hoping to join the Angels over the weekend. Street opened the season on the disabled list and is eligible to be activated Thursday.
• Infielder Nolan Fontana was optioned to Triple-A Salt Lake on Tuesday to clear a roster spot for right-hander Parker Bridwell, who started for the Angels against the Braves. Fontana went 1-for-18 with a homer in seven games with the Halos.
"It's good to get a look at Nolan," Scioscia said. "I think that any player that kind of comes up and sees the challenge is usually better for it. When he comes back up here again, I think he'll be more comfortable."