There have been a number of small deadline deals so far today, so stay tuned here to Getting Blanked for all your Trade Deadline analysis this weekend.

Lots of big names are still on the market, such as B.J. Upton, Heath Bell, and Ubaldo Jimenez, but so far none of them have moved.  Here’s a look at what has happened today:

The Tigers were desperate for another starting pitcher to go along with Justin Verlander, Max Scherzer, and Rock Porcello for a postseason run.  Fister won’t set the world on fire, but he’s been a very solid, if unlucky, pitcher for the Mariners this year.  His 3-12 record is in no way a reflection on how he’s pitched.  He has a 3.33 ERA to go along with the seventh-best walk-rate among AL starters.  His numbers are slightly better at spacious Safeco Field, but not different enough from his road splits to cause concern.

The other appealing thing about Fister is that he’s under team control until 2015 and won’t enter his arbitration years until next year.

The main piece going back to the Mariners is third baseman Francisco Martinez.  Martinez, who’s about to turn 21 in September, was ranked fourth among Tigers’ prospects by Baseball America at the beginning of the season and is hitting .282/.319/.405 with seven home runs in 372 plate appearances for the Tigers AA affiliate in Erie.  Baseball America said this about him at the start of the year:

“Martinez has a good frame with present strength and projection remaining.  He has all the raw tools of a prototypical third baseman, with the added bonus of above-average speed.  With a quick bat and a flat swing path, he produces a lot of hard groundballs and line drives…he should have solid over-the-fence power as he continues to physically mature…”

In addition, the Tigers grab reliever David Pauley in the deal who has a 2.15 ERA and 3.92 xFIP in 29 games out of Seattle’s bullpen this year.  The Mariners, meanwhile also get lefty swingman Charlie Furbush and fringe fourth outfielder Casper Wells.  Seattle has indicated that Furbush could be given the chance to start down the stretch.

With the injury to Rickie Weeks, the Brewers have sought to bolster their middle infield which they have done with the acquisition of Felipe Lopez on Thursday and now utility-man Jerry Hairston Jr. today.  In return, the Nationals get AA outfielder Erik Komatsu.

Hairston had been hitting .268/.342/.385 with four homers in Washington this year filling in as an injury replacement at third for Ryan Zimmerman.  He also saw time at second, short and in the outfield.  He joins his eighth organization in eight seasons.

Komatsu, 23, meanwhile, was ranked #14 by Baseball America in a weak Brewers system.  He’s a solid on-base threat who has a 14% walk-rate with AA-Huntsville and a .393 OBP, but doesn’t play well enough in the field to stick in centerfield and doesn’t hit for enough power to be a corner player.  His ceiling is likely as a fourth outfielder.

In need of some infield depth and a bat to hit left-handers, the Red Sox acquired Aviles from the Royals for infielder Yamaico Navarro and minor league right-hander Kendal Volz.  Aviles and Navarro are fairly similar players, but Aviles has a lot more experience and is better against left-handed pitching.  The Royals get slightly younger and take a flyer on a middling pitching prospect in Volz.  According to multiple sources, the Red Sox may experiment with Aviles in the outfield.

Stay tuned here to Getting Blanked for more analysis on the 2011 MLB Trade Deadline.