Happy Fourth of July!

Ah yes, the Fourth of July. Beer, barbecue and firecrackers fill the festivities in backyards and parks across the US of A where Obamacare, Tom & Katie's breakup and the shocking discovery that Anderson Cooper is gay will be discussed deep into the night.

There's also baseball to discuss as we crank up our weekly look into the numerical minutiae that every baseball betting season brings. From wagering trends to plain old everyday stats, we'll cover the ongoing MLB grind that is now into the second half of the 2012 campaign.

Michael YoungNote that numbers below were through games of Monday (July 2).

Under teams that might surprise you

Oakland leads everyone in cashing UNDER tickets (30-48-3 O/U/P), which probably doesn't surprise many folks given the A's weak offense, fair pitching staff and the cavernous o.co Coliseum. The Athletics rank 28th in the majors in scoring (3.78) and fifth with a 3.49 ERA, and they should continue to be a nice target for bettors who favor the low side of totals.

But what might surprise some is all four AL West teams have been UNDER winners, along with the New York Yankees paying off at a 59% clip on that side of the MLB odds.

Texas leads the bigs by a good amount with 5.34 plate crossings per contest. The Rangers are only slightly leaning UNDER (37-40-3), but it's a direction the Rangers have been trending to more lately. The Angels (32-46-2) have produced UNDER winners at the same rate as the Yankees, but that was due to a very slow April when Albert Pujols was the primary culprit. The Halos have upped their scoring recently, and that has led to nine of their last 13 skipping OVER the mark, along with one push.

Seattle (38-43-1) is a bit like Oakland with what is generally a punchless attack and an average mound corps. What makes the Mariners a bit different is the fact that nearly 14% of their runs to date came in a 4-game road stretch the final two days of May and first two days of June in hitter-friendly venues at Texas and Chicago. Those games also accounted for four of Seattle's 38 OVERS, and the M's could be an even better UNDER bet from here on out...except for maybe their return trips to face the White Sox (Aug. 24-26) and Rangers (Sept. 21-23).

All betting trends involving the Yankees need to be tempered with the fact they're such a public team. Playing the OVER is also a more popular wager, which could also factor into New York's totals record (32-46-1). It is interesting to see such a heavy UNDER lean in games at Yankee Stadium, however, with 26 of 41 staying below the line.

Looking just ahead to this weekend, the Mariners will be in Oakland to take on the A's in a clash of UNDER winners. Seven of their first 10 meetings this season have failed to reach the total, but the four games in Oakland split 2-2.

Shuffle up and deal

The impending all-star break also signals the start of the trade season. There were signs the annual swap meet might get underway early, but a reported deal between the Astros and Dodgers for Carlos Lee fell through when the veteran slugger vetoed the trade per his 10/5 privileges.

Houston still figures to be a seller and one of three NL Central squads, along with the Chicago Cubs and Milwaukee Brewers, looking to unload some high-dollar talent over the next month. Zack Greinke is a candidate to leave Milwaukee, with the Atlanta Braves and Texas Rangers among the early suitors. Chicago has two very attractive hurlers that are churning up interest. Ryan Dempster is due off the DL within the next 10-14 days, and was already someone on the Dodgers' wish list before he was hurt. The Yankees could also get into the Dempster sweepstakes, and if that fails, go after his Cubs teammate Matt Garza who is well-versed in the ways of the AL East from his days with Tampa Bay.

The Astros are shopping starter Wandy Rodriguez and starter-turned-closer Brett Myers, in addition to still wanting to ship Carlos Lee out. Myers has a $10 million option for 2013 that will kick in if he finishes 45 games this season, which could be a stumbling block for teams wanting a closer. If he's dealt to be a setup arm, look for some sort of new clause to have to be done a la Francisco Rodriguez a couple of years back when he was swapped from the Mets to the Brewers with similar games-finished language in his contract at the time.

Speaking of K-Rod, rumors are he could be headed from Milwaukee back to the Mets who desperately need bullpen help. New York relievers rank last in the majors with a 4.93 ERA, and the backend of the pen has been unsettled all season. Rodriguez has been working in setup for the Brewers this season and is 1-4 with a 4.00 ERA.

Fading the Astros on the road

Saying Houston has struggled on the road is an understatement with the Astros 9-29 away from home after dropping Monday's series opener in Pittsburgh by an 11-2 count. They were +165 underdogs to lose a sixth straight game Tuesday when they faced Pirates righthander AJ Burnett.

Houston has also found PNC Park to be a tough place the past few seasons; Monday's setback left the Astros 6-13 in Iron City since the start of the 2010 season. Until they start consistently winning at least two of every five games away from Houston, the Astros are on my fade list. Play Pittsburgh -140 on the MLB odds board Wednesday when Kevin Correia takes on Houston rookie Dallas Keuchel.