Tyler Flowers' early power surge makes him a trendy add. (US Presswire)

Each week, Baseball Press will be providing some "Under the Radar" fantasy players for NL-only leagues, AL-only leagues and mixed leagues. We'll review the diamonds in the rough on the waiver wire who might help you boost your fantasy team in 2013. This edition of Under the Radar will cover potential pickups for your team that may be available during the first week of the season.

With all of the unpredictable injuries, job changes, and trades of the baseball season, many fantasy owners are looking to the waiver wire for help. Regardless of where help is needed, this edition of UTR can provide you with some players who are still available in most mixed leagues.

*Owned percentages via Yahoo!

Mixed League Options
Gerardo Parra - OF, Arizona Diamondbacks (15% owned)
Gerardo Parra took over as the Diamondbacks every day center fielder after prospect Adam Eaton hit the disabled list late in spring training. In limited at-bats over the past four seasons, Parra carries a career .282/.334/.406 triple-slash line, and has collected 15 stolen bases the past two season. It really appears that Parra could be in line to see 500 at-bats for the first time in his career, allowing him to possibly take a step up in production for fantasy owners this season.

Tyler Flowers - C, Chicago White Sox (10% owned)
Tyler Flowers was talked - and kind of joked about - on this week's podcast, but you can't overlook what the rookie has done at the dish in the first few games of the 2013 season. Even though the 27-year-old has never hit for average at the high minor league levels, he does possess a little pop in his bat. Pop that is obviously helped by the great hitting conditions at U.S. Cellular Field. You should not drop your catcher in a one-catcher league to pick up Flowers, but he must be owned in any two-catcher leagues while his hot streak continues.

Michael Saunders - OF, Seattle Mariners (15% owned)
Even though he carries a career .283 on-base percentage, Michael Saunders is hitting lead-off for the Mariners, and seems to be doing so for one reason - to steal a base when he gets on. At the end of play on Thursday night, Saunders had reached base three times this season and swiped two bags. There is a good chance he won't stay at the top of the order if he doesn't start reaching base more consistently, but if you are looking for a short term source of steals early on, he is not a bad pickup.

Jim Henderson - RP, Milwaukee Brewers (17% owned)
Outside of Carlos Marmol for the Chicago Cubs, the closer most likely to lose his job early in the season this year is John Axford. The mustached one's control was not good this spring, and hasn't improved early this season. Hitters are batting .545 against him, giving up four earned runs, three of which came from home runs. Closers cannot give up home runs. Henderson, on the other hand, has allowed two hits in his two innings of work this year, striking out two, and allowing zero runs. If you want to prospect on saves, the Henderson owner in your league could be the first to strike it rich.

NL-Only Options
Marlon Byrd - OF, New York Mets (1% owned)
Marlon Byrd fell off the face of the baseball world last season. After being traded by the Cubs, he landed in Boston where he failed to stick with the team, and was then suspended for 50 games for PEDs, but now he seems to be back in pre-2012 form with the Mets. He performed well enough in spring training to lock down the starting right field job in New York, and has a .385 on-base percentage after the first series of the season. He is worth picking up in any NL-Only League, as long as he continues to see at-bats.

Daniel Descalso - 2B/3B/SS, St. Louis Cardinals (3% owned)
The St. Louis Cardinals super utility man has found a spot in the every day starting lineup as David Freese has been sidelined with an ailing back. Freese is slated to return early next week, but Descalso consistently does well when he gets playing time, meaning there is a good chance he will still receive enough at-bats filling in throughout the season to roster in any NL-Only league that utilizes a middle/corner infield position. As we saw on Wednesday night, even after Freese returns, Descalso will see time when Allen Craig gives one of the corner outfielders the day off.

AL-Only Options
Vernon Wells - OF, New York Yankees (7% owned)
After a trade to the Bronx from Los Angeles Angels, Vernon Wells has once again become an every day player. He catches a lot of grief because he never lived up to the major contract he signed, originally with the Blue Jays, but he still has some pop in his bat and won't play bad enough defense to lose playing time. Your team's average will take a hit if you pick him up, but he could be a very cheap source of 20-plus home runs by the end of the year.

Travis Hafner - DH, New York Yankees (2% owned)
Like most of the current Yankees, Travis Hafner has a problem staying healthy. His shoulder and back, both of which you need to work properly in order to hit home runs, have consistently given Hafner problems over the past five seasons. 2007 was the last year that he had 500 at-bats, and since then, 396 at-bats has been his season high. This reason alone is why he is only owned in 2-percent of leagues. I'm not saying hitting in Yankee Stadium will take away all of his injuries, but the short porch in right field of Yankee Stadium can resurrect the career of a hitter like Hafner.