"I don't know," he said.
He put on quite a show Friday, hitting what might have been the longest home run in Kauffman Stadium history, on a fastball from former teammate Jason Vargas. The ball splashed down in a fountain high and deep beyond left-center field, and the Royals estimated the distance at 445 feet.
That was impressive enough, until ESPN announced its own estimate -- 489 feet, which would make the home run the longest in the majors this season and the longest ever by Trout. The ESPN number is not calculated by figuring the distance to where the ball lands, but by figuring where the ball would land had it traveled, unimpeded, back to ground level.
"I've been here five years, and that's the most impressive home run I've seen here," Royals Manager Ned Yost said. "I mean, it was absolutely crushed."
Trout is tied for fifh in the AL in home runs, with 18. He is second in slugging percentage (.616) and first in OPS (1.019).
Trout said he likes hitting here -- he hit a shot last year off another former teammate, Ervin Santana, that was projected at 463 feet,
"I squared it up," he said. "I definitely barrelled it."