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Igor Andreev in Court Staples from Under Armour.

I'm seeing a whole lot of Under Armour on the rec tennis courts, especially on guys. There is just something all-athletic about the line -- for the no fluff, no show, just want to get the job done kind of guy.

 Pictured here at Wimbledon Igor Andreev wore a white version of the Under Armour Men's Classic II Crew, $39.99 (similar to the Team Zone Crew) and Men's Woven Short, $39.99; great tennis staples with an edge that includes Heat Gear tech, 30+ sun protection and anti-odor technology.

If you've worn UA you know that this stuff is lightweight and all performance. This particular shirt is not a compression top so much looser fitting than some UA tops. I personally like the look of loose much better than tight (on a guy that is - Rafa excepted). 

Andreev plays with the Babolat Pure Drive GT. Props to him for a great run at All London. Find his gear at Under Armour, Babolat and Tennis-Warehouse.

Image: Igor Andreev vs. Tommy Haas, June 29, 2009 courtesy LIFE.

Guys. Vibrancy and Technology For Your Game.

If you're a tech lover and not a subdued colors guy, here are a couple of great choices. Top left, seen just recently on Igor Andreev at the Madrid Masters, is the Under Armour Men's Fall Clutch Polo, $69.99 USD. Made of PolyArmour Heat Gear, this men's tennis shirt offers great temperature and moisture management. It is 30+UPF and has anti-odor technology built in. The mesh side panels on the shirt are white and ice grey. It's eye catching, especially in motion. The shirt also comes as a crew neck, if you prefer t-shirt style. Igor wore his with white Fall Edge Shorts, $39.99 and a white head-band. Sharp.

The shirt on the right is by Yonex and we have seen quite a bit of it on Lleyton Hewitt and on David Nalbandian this fall. It's the New York Crew in yellow with blue, black and red accents. It is part of their Very Cool line meaning that the fabrication lowers body heat by 3 degrees.The fabric incorporates xylitol (yes, like in chewing gum) that absorbs heat (who knew?), $49.99. It comes in white as well. Looks great with black shorts. Yonex makes a pair for $39.99.

Buy at Tennis-Warehouse. You can also learn more at YonexUSA.com or UnderArmour.com.

Igor by Daniel Garcia/AFP/Getty Images, David by Pedro Armestre/Getty Images.

US Open Shop Teams With Under Armour Performance Apparel for a Step-Up in U.S. Open Branded Tennis Wear

If you have a hankering for some US Open '08 gear, take a look at the great new line of US Open branded apparel by Under Armour: performance tees, tanks, long sleeves and shorts for men and women range in prices ranging from $42 to $55 USD. We love cotton but not to play in for long periods of time -- the extra cost for the PolyArmour fabric is worth it. Check out the whole line at US Open Shop. Once on the site, look for the Under Armour items listed under men's and women's performance apparel.

Ginepri keeps HIS cool in Under Armour

While players down south are trying to keep cool in the growing heat, their northern peers are just coming outside to play, bundled up with sweatshirts and wind breakers. Tough way to play but it feels pretty nice to be outdoors again. Here's a solution.

Under Armour seems to get it right when it comes to temperature regulation. Their close fitting thermal grid Cold Gear base (1.0 level works for cool early spring conditions) keeps you comfortably warm and unrestricted despite winter's last licks. Put one on under your tennis shirt and you can shed the bulky layers. A men's UA Cold Gear base crew 1.0 runs $39.99 USD.

For warmer settings, our most aggressive players like the UA Men's Heat Gear Edge Knit short that runs $39.99. It hosts side mesh zones for increased ventilation, and we love the terry-like PolyArmour lined pockets for drying off hands between points. The lightweight Heat Gear Edge Sleeveless Tee is $39.99. Both the top and short offer UPF 30 protection from the sun. Nice bonus! The Ventilator Cap pictured here on Ginepri is $23.99. The cap releases moisture and heat, something cotton caps out there don't do.

You can still find Cold Gear on the Under Armour site. The Heat Gear tops and shorts are available in a variety of colors at: www.underarmour.com or Tennis-Warehouse.com.