OAKLAND -- Andre Iguodala's sly expression summed up everything fun and frisky about the Warriors' full-throttle mood these days.

Training camp doesn't start for more than a week. This is supposed to be an NBA quiet time.

And still, Iguodala knew exactly what I was getting at Wednesday when I asked him about the matchup between himself and Harrison Barnes during the team's unofficial workouts the past few weeks.

"To me, it's not a big deal," Iguodala said of a report by NBA writer Peter Vecsey that Barnes had been "wearing out" Iguodala and other Warriors veterans.

"I mean, OK, (say that) he's killed me every day. I don't care. That's not the case, but. ..."

Golden State Warriors’ Jarrett Jack (2) defends against Denver Nuggets’ Andre Iguodala (9) in the third quarter of Game 4 of their first-round
Golden State Warriors' Jarrett Jack (2) defends against Denver Nuggets' Andre Iguodala (9) in the third quarter of Game 4 of their first-round NBA basketball playoff series on Sunday, April 28, 2013, in Oakland, Calif. (Jose Carlos Fajardo/Bay Area News Group)

Then Iguodala's voice trailed off, he smiled, and he shrugged in a way that seemed to suggest that he couldn't fully explain what was going on behind closed doors.

Which is a good thing, I presume, for the Warriors' upward trend.

You don't want bland workouts in September if you're aiming to play until June.

If you put together as much talent as the Warriors have for the 2013-14 season, you want edginess and high-energy clashes, and it should all coalesce into team-wide chemistry by the end of October.

That was not precisely the case, say, when the Warriors had Corey Maggette and Vladimir Radmanovic meandering around the practice floor.

Clearly, the current five-on-five games at the Warriors facility, involving all of the team's key players, have been competitive.

And it's not hard to imagine that Barnes, the youngster who may be losing his starting job, and Iguodala, the new Warriors acquisition with the big reputation, would be squaring off repeatedly and intensely.

They both play small forward. They're both incredibly athletic, proud, and both want the team to get better and better.

"It's been fun -- we're all pushing each other," Iguodala said.

"My first day I think I went up against Klay (Thompson), and I had to chase him around. That was a good workout. That was tough.

"So we're looking good. Steph (Curry) had one day where he just couldn't miss. And (Andrew) Bogut's probably been the most dominant, because nobody's really been able to guard him.

"Everybody's had really good days. Me, myself, I've got a different mindset than trying to prove something, 'I'm going to stop this guy today,' or 'I'm going to do this.' "

So is Barnes -- who had such a terrific playoff series last season against Iguodala's Nuggets -- maybe coming into these workouts with a little bit of a chip on his shoulder?

"Uhh, I'm not sure," Iguodala said. "My focus has really been: What type of team do we have? How can I get the most of my game and the most out of my teammates' games?

"If anybody's killed me, I'd say ... Evan Turner's killed me (back when they were 76ers teammates), I think it was coming into his second year.

"He had something to prove because he didn't have a good rookie year. And he started that year."

Barnes and all of the Warriors players have something to prove this season: That they can not only repeat last season's trip to the second round of the postseason, but that they can expand on it.

And Iguodala is naturally the guy who is supposed to trigger that improvement.

The way to push it all forward is if Barnes and others go as hard as possible in these workouts, and if Iguodala pushes it, too.

Of course, Iguodala is a different player from Barnes -- they're versatile in different ways.

And there's a strong chance that they could find themselves on the floor together for long periods this season, with Barnes shifting over to the power-forward spot or with Iguodala playing one of the two guard positions.

In fact, Iguodala said he is already focusing on facilitating the offense, figuring out where the Warriors' top scorers want the ball and when they want it.

By the way, Iguodala, Thompson and Barnes all playing together -- with Bogut defending the paint -- would be the Warriors' most dangerous defensive unit, no question.

They're going at each other now to sharpen themselves for the nights when they'll be up against Kevin Durant, LeBron James, Tony Parker and all the other top players.

It's how an up-and-coming team keeps going up, keeps itself on edge, and storms into training camp at the highest speed possible.

Read Tim Kawakami's Talking Points blog at blogs.mercurynews.com/kawakami. Contact him at tkawakami@mercurynews.com.

ONLINE EXTRA

Iguodala has lofty expectations for Warriors. Read story at www.mercurynews.com/warriors.