"It was bright out there, wasn't it?" Mauer said. "There's really not too much to that. There are days where I've worn them and days where I haven't. I'm still trying it out. It's still pretty early."
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Mauer didn't wear them in his first two Grapefruit League games, as one was a night game and the other came on a cloudy day. But he did try them during live batting practice early in camp, and said he'll continue to experiment with them this spring.
"I've worn them in the field but now I've actually got in the box with them," Mauer said. "But this is why I'm down here, trying things out. And today was a day I wore them. It's different, but this is a time to try those things."
Mauer said he reached out to designated hitter Byung Ho Park for advice, as Park prefers to wear sunglasses at the plate during day games. Mauer added he has no plans to wear sunglasses during night games.
"I've tried different shades and different tints," Mauer said. "I went with amber tint. They're the same as yesterday. I've talked to different people who wear them and I've tried different things. Park wears them and I asked him about his. So yeah, I'm just giving them a try."
Mauer, 32, was a six-time All-Star, three-time batting champion and the 2009 American League MVP before the concussion with a career slash line of .323/.405/.468. But he hit a combined .270/.348/.376 with 14 homers and 61 doubles over the last two seasons.
• A day after hitting his second homer of the spring, Park went 2-for-3 with a pair of singles and is hitting .313. But Twins manager Paul Molitor is more impressed by the fact Park has been a quick learner of English and is able to communicate with his manager and teammates.
"He's doing remarkably well in my opinion," Molitor said. "You're getting more than one-word responses now. He's trying to put things together."
• Catcher Stuart Turner, who has been out with a stiff lower back, made his Grapefruit League debut on Wednesday, catching three innings and going 0-for-2.
• Closer Glen Perkins made his third appearance of the spring, tossing a scoreless fourth inning. He gave up a hit and struck out one. Setup reliever Casey Fien also saw action and gave up a solo shot to Cameron Rupp in the fifth.