Sometimes bigger is better. At least when it comes to tight ends.

One priority for the Arizona Cardinals during the offseason was to improve their tight end room. Coach Bruce Arians wanted tight ends that fit his mold -- guys who are bigger, stronger, faster and love to block. Midway through last season, Arizona began to transition its tight end unit by signing 6-foot-6, 275-pound Jake Ballard. John Carlson, who's 6-5, 248, was added during the early part of this year's free agency and Troy Niklas -- 6-6, 270 -- was drafted in May.

Arians wanted his tight ends to be bigger. He got what he wanted.

"That's always been my philosophy," Arians said. "I don't want a guy that's really a wide receiver and you're only hope to run the football is if they put a nickel in there and he can block him and in base defense, not going to block anybody. My experience (is) it's always been a detriment rather than guys who can do both."

Arians has one of those tight ends that's more of a wide receiver than a bruising blocker off the line.

Rob Housler, who's entering his fourth season with the Cards, has a basketball player's body. He can be quick in the open field and looks as comfortable as most wideouts running a route off the line. But that's not what Arians wants.

He wants to see his tight ends be a combination of the old school definition of the position combined with a sprinkle of new school. And that's why Ballard and Niklas have coaches giddy with excitement. They're both big men who enjoy contact at the line of scrimmage yet they're both athletic enough to run routes, catch tough passes and turn up field to make plays. Ballard showed what he's capable of in eight games last season, but Niklas was sidelined for most of the offseason while recovering from sports hernia surgery before suffering a broken hand.

But it's Carlson who's impressed the most during organized team activities and minicamp.

"John has done a really, really good job," Arians said. "First off, he's extremely bright. He picked up the system extremely quick. He plays full speed all the time and has got outstanding hands. His issue in the past ... he's not an overwhelming blocker but he's more than adequate."

Each new addition to the tight end room brought more competition. While some players wilt at the first sign of having to play for their job, Arizona quarterback Carson Palmer said that hasn't happened yet with the Cards.

"It's been phenomenal to have John here for a number of (reasons)," Palmer said. "Mainly, he's really pushed that tight end group. He's really brought the best out of Robby. Bringing competition to that spot has really helped Robby improve."

While Carlson, Ballard and Niklas look similar in stature, Palmer said each brings a different asset to the field.

"We have three different guys with three different strengths -- four guys really (including Housler)," Palmer said. "We all kinda feed off of each other. There's one guy that's fast. There's one guy that's big and powerful. There's one guy that kinda does it all. I think that's what Coach Arians kinda envisioned in that position -- not a bunch of the same guys but a bunch of different guys."