In the past week we’ve seen organizations promote some of their most valuable assets to the big leagues. The list includes: Reid Brignac (Rays), Ross Detwiler (Nationals), David Huff (Indians), Kris Medlen (Braves), Anthony Swarzak (Twins) and Sean West (Marlins). Fernando Martinez (Mets) made his big league debut on Tuesday night, and Matt Wieters (Orioles) is slated to do the same on Friday.

These sorts of callups recieve no shortage of mainstream media attention. But keeping track of all the minor league promotions and demotions, on the other hand, can be a challenge. Prospects On The Move attempts to fill in those gaps. Last week, we touched on Brett Wallace and Jordan Danks, a pair of ’08 first-round picks, and a host of others.

Indians
Promoted RHP Bryce Stowell (2008, 22nd round) to low Class A Lake County. The UC Irvine product received $725,000 to sign at the deadline last August.

Royals
Promoted RHP Tim Melville (2008, 4th) and LHP Mike Montgomery (2008, 1st supp.) to low Class A Burlington, where both made their full-season ball debuts. You may remember Montgomery from such league prospect rankings as last year’s Rookie-level Arizona League, where he occupied the top spot. The Royals bought Melville away from a North Carolina committment for $1.25 million. Incidentally, last year’s Bees rotation included another Royals’ righty-lefty tandem in Danny Gutierrez and Danny Duffy.

Brewers
Demoted OF Cutter Dykstra (2008, 2nd) to Rookie-level Helena, where he ranked as the Pioneer League’s No. 2 prospect a year ago. Off to a .212/.301/.303 start for low Class A Wisconsin, Dykstra has not played for the Timber Rattlers since May 14. The Brewers do not have a short-season affiliate to bridge the gap between the Pioneer and Midwest leagues.

Demoted RHP Jeremy Jeffress (2006, 1st) to high Class A Brevard County. He finished the ’08 campaign in Double-A, but was off to a rough start in the Southern League this season. In eight starts, he went 1-3, 7.57 with 34 strikeouts and 33 walks in 27 1/3 innings. The silver lining: he allowed only one home run.

Athletics
Demoted 2B/SS Adrian Cardenas (2006, 1st supp.) to Double-A Midland, where he finished ’08 and began ’09. As a RockHound, the 21-year-old lefthanded batter is hitting a robust .402/.487/.619 in 24 games; as a Triple-A Sacramento River Cat, though, he’s batting .177/.254/.258 in 18 games. The Phillies originally drafted Cardenas, our High School Player of the Year in ’06, but used him as the key trade chip in their acquisition of Joe Blanton last July.

Phillies
Promoted LHP Antonio Bastardo (2005, Dominican Repbulic) to Triple-A Lehigh Valley. Bastardo ranked fourth in the Double-A Eastern League in ERA (1.82) at the time of his promotion, having struck out 39 batters in 34 2/3 innings.

Padres
Promoted RHP Will Inman (2005, 3rd) to Triple-A Portland and RHP Mat Latos (2006, 11th D/F) to Double-A San Antonio. Orignially drafted by the Brewers, Inman made the necessary fix to his control, slashing his walk rate from 4.7 to 1.6 per nine innings in his repeat of San Antonio. Latos makes the big jump to San Antonio all the way from low Class A Fort Wayne, where he’s chewed up Midwest League batters (50-to-11 strikeouts-to-walks in 49 2/3 innings) over the coure of the past two seasons.

Mariners
After three starts and a 7.20 ERA at Double-A West Tenn, the Mariners demoted RHP Steven Hensley (2008, 4th) to high Class A High Desert. His raw numbers aren’t much better with the Mavericks thus far (5.73 ERA), but then the change in context from the California to the Southern league is enormous.