And for a franchise that proclaimed it wants more athleticism and defense, well, this kid is one of their valuable planted seeds.

And he already helped St. Louis win a ballgame in his first game, making a speedy catch. Yes, he was picked off first. But I bet he makes a baserunning play that changes a game down in Miami.

• In case you didn't see this quote from spring training, here's what manager Mike Matheny shared, in regards to the magnificent Magneuris: "I had a major-league coach come up and ask if Sierra was making our club. And I said, 'First of all, tell me why?' And he saw him go get a couple balls and said, 'This guy can flat-play,' and I said, 'The only problem is he's only played low-A ball,' which kind of blew him away. And we had that last year in that one (spring training) game when we brought him up – he was a game-changer. And I think he's got that capability in him. Just an exciting player.

"... I love firing him in when we can, letting him run wild, do his thing."

Before that spring game, Matheny was asked if the speed reminded him of any particular player?