Watch the replay of Minnesota's game against Edmonton from Saturday. It won't be long before Miguel Ibarra, #10 in gray, zooms into your picture from points unknown. Start focusing on him. He's in central midfield - no, wait, he's on the right wing. Now he's tracking back deeper in the midfield. Now he's harrying a defender, who until recently thought he might collect a wayward ball with no pressure whatsoever.
Eventually, you think to yourself: Geez, that guy is always running.
The 24-year-old midfielder is listed, with odd precision, on the team's website as 5'6", 145.2 lbs, making him the smallest player on United's roster. He is fast, but not a burner; quick, but not blindingly so. He is not a notably great passer, yet, and in the rare cases when he does shoot, his finishing needs work.
But that workrate. He can run all day.
"His energy and his attitude and his selflessness to work hard to really put teams on their heels is so important, particularly when we're not using the ball as well as we could," said United head coach Manny Lagos. "He's got a lung capacity that's amazing. That's the thing about soccer players; you can be big and strong or you can be small and quick. Miguel has this ability to make these long hard runs, and recover so quickly to do it again. It's really impressive and unique, and I think that's why that energy comes out on the field."
In some ways, that workrate was the key to the 4-2-3-1 formation that United deployed against Edmonton. With the wingers pushing for width, Ibarra was left with acres of space in the middle of the field to try to run into.
He's still likely to pop up in odd positions - How come he's actually outside of Jamie Watson right now? - but that freedom gives him the opportunity to use his energy to prod the United attack forward.
That energy is also useful as a defensive weapon. The second half of games in the NASL often turn into a series of offensive volleys; the games become less about tactics and moving the ball, and more about committing players forward to stress the defense through sheer numbers.