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Prospect transactions: July 27-August 2
Double-A Frisco's Olt powers way into Rangers' pennant race
08/03/2012 10:00 AM ET
Mike Olt had 28 homers and 17 doubles in 95 games at Double-A Frisco.
Mike Olt had 28 homers and 17 doubles in 95 games at Double-A Frisco. (Walter Barnard)

Readers: "Prospect Transactions" updates you weekly on the most notable moves involving prospects in the Minor Leagues. All comings and goings of MLB.com's top prospects are included and are ordered by organization.

Player Org Move
Patrick Corbin ARI Promoted from Triple-A Reno to D-backs
John Leonard ARI Demoted to Arizona League
Justin Bianco ARI Demoted to Arizona League
Sean Gilmartin ATL Promoted from Double-A Mississippi to Triple-A Gwinnett
Glynn Davis BAL Promoted to Class A Adv. Frederick
Ryan Lavarnway BOS Promoted from Triple-A Pawtucket to Red Sox
Notes: MLB.com's No. 76 prospect is getting his first shot back in the bigs this season. He posted an .815 OPS for the PawSox. In two stints spanning 17 games with Boston last season, the slugging catcher batted .231 with two home runs and eight RBIs.
Blake Swihart BOS Placed on Class A Greenville DL (hip flexor)
Arodys Vizcaino CHC Traded from Braves; unassigned (elbow surgery)
Matt Szczur CHC Promoted Class A Adv. Daytona to Double-A Tennessee
Notes: MLB.com's No. 93 prospect has been one bright spot in an otherwise dormant Cubs system. Szczur posted .295/.394/.407 marks and stole 38 bases in 78 games for the FSL Cubs. Through his first six games with the Smokies, the right-handed-hitting outfielder was 4-for-21 at the plate.
Felix Sterling CLE Demoted from Class A Lake County to Arizona League
Charlie Culberson COL Traded from Giants; sent to Triple-A Colorado Springs
Kent Matthes COL Placed on Double-A Tulsa DL (oblique)
Edwar Cabrera COL Optioned from Rockies to Triple-A Colorado Springs
Tyler Saladino CWS Promoted from Double-A Birmingham to Triple-A Charlotte
Nestor Molina CWS Activated off Double-A Birmingham DL
Andre Rienzo CWS Activated off Double-A Birmingham DL
Simon Castro CWS Placed on Triple-A Charlotte DL
Marcus Semien CWS Placed on Class A Adv. Winston-Salem DL
Keenyn Walker CWS Placed on Class A Adv. Winston-Salem DL (left shoulder)
Andy Oliver DET Activated off Triple-A Toledo DL
Bobby Borchering HOU Traded from D-backs; sent to Double-A Corpus Christi
Notes: Though his prospect light has dimmed, the free-swinging Borchering did hit his first homer as a member of the Astros organization on Wednesday.
Marc Krauss HOU Traded from D-backs; sent to Double-A Corpus Christi
Jarred Cosart HOU Placed on Triple-A Oklahoma City DL
Telvin Nash HOU Placed on Class A Adv. Lancaster DL
J.C. Sulbaran KC Traded from Reds; assigned to Double-A NW Arkansas
Donnie Joseph KC Traded from Reds; assigned to Triple-A Omaha
Noel Arguelles KC Activated off Double-A Northwest Arkansas inactive list
Alex Santana LA Assigned to Rookie-level Arizona League
Nick Maronde LAA Promoted to Double-A Arkansas
Notes: The Angels' fourth-ranked prospect was lights-out in 10 starts at Class A Advanced Inland Empire, where he compiled a 1.82 ERA and a 60-to-14 strikeout-to-walk ratio in 59 1/3 innings. He'll help fill the void left by John Hellweg and Ariel Pena (see trades, below) in the Travelers rotation.
Nick Mutz LAA Promoted from Arizona League to Class A Cedar Rapids
Andrew Romine LAA Promoted from Triple-A Salt Lake to Angels
Zack Cox MIA Traded from Cards; placed on Double-A Jacksonville DL
Chad James MIA Activated off Class A Adv. Jupiter's inactive list (personal)
Tyler Thornburg MIL Demoted from Brewers to Triple-A Nashville
Logan Schafer MIL Placed on Triple-A Nashville DL
Jimmy Nelson MIL Activated off Double-A Huntsville DL (right shoulder)
Jean Segura MIL Traded from Angels; assigned to Double-A Huntsville
John Hellweg MIL Traded from Angels; assigned to Double-A Huntsville
Notes: The right-hander threw five one-hit innings in his debut as part of the Brewers organization on Wednesday.
Ariel Pena MIL Traded from Angels; assigned to Double-A Huntsville
Brock Kjeldgaard MIL Outrighted; assigned to Double-A Huntsville
Khris Davis MIL Promoted from Double-A Huntsville to Triple-A Nashville
Eddie Rosario MIN Activated off Class A Beloit DL (facial surgery)
Pedro Hernandez MIN Traded from White Sox; assigned to Triple-A Rochester
Matt Hauser MIN Promoted to Double-A New Britain
Cory Mazzoni NYM Activated off Double-A Binghamton DL (thumb)
Mason Williams NYY Placed on Class A Adv. Tampa DL (non-throwing shoulder)
Derek Norris OAK Demoted from A's to Triple-A Sacramento
Addison Russell OAK Promoted to Class A Short-Season Vermont
Miles Head OAK Placed on Double-A Midland DL (hit by pitch 7/29)
Tommy Joseph PHI Traded from Giants; assigned to Double-A Reading
Seth Rosin PHI Traded from Giants; assigned to Class A Adv. Clearwater
Ethan Martin PHI Traded from Dodgers; assigned to Double-A Reading
Sebastian Valle PHI Promoted from Double-A Reading to Triple-A Lehigh Valley
Cesar Hernandez PHI Promoted from Double-A Reading to Triple-A Lehigh Valley
Brody Colvin PHI Promoted to Double-A Reading
Jonathan Pettibone PHI Promoted to Triple-A Lehigh Valley
Aaron Altherr PHI Placed on Class A Lakewood DL
Robbie Erlin SD Assigned to Arizona League (rehab, elbow)
Notes: MLB.com's No. 86 pitch hasn't thrown an official pitch since May, when he was off to a strong start (2.67 ERA and 45 K's in 33 2/3 frames) at Double-A San Antonio. Erlin and San Diego elected rest over surgery regarding his sore throwing arm.
Cory Spangenberg SD Activated off Class A Adv. Lake Elsinore DL
Brad Boxberger SD Promoted from Triple-A Tucson to Padres
Stephen Pryor SEA Promoted from Triple-A Tacoma to Mariners
Carter Capps SEA Promoted from Triple-A Tacoma to Mariners
Leon Landry SEA Traded from Dodgers; sent to Class A Adv. High Desert
Jabari Blash SEA Activated off Class A Clinton DL
Francisco Peguero SF Activated off Triple-A Fresno DL (side strain)
Josh Osich SF Placed on Class A Adv. San Jose DL
Trevor Rosenthal STL Demoted from Cardinals to Triple-A Memphis
Michael Blazek STL Promoted from Double-A Springfield to Triple-A Memphis
Alex Colome TB Promoted from Double-A Montgomery to Triple-A Durham
Derek Dietrich TB Promoted to Double-A Montgomery
Mike Olt TEX Promoted from Double-A Frisco to Rangers
Notes: MLB.com's No. 32 prospect was the player other teams asked Texas about in advance of this past week's non-waiver Trade Deadline and, each time, the Rangers balked. Why was he other clubs' top target? Olt collected 28 home runs in 95 games at Double-A Frisco prior to his callup (he said goodbye to the folks in Frisco with this blast). That total comes after his awe-inspiring Arizona Fall League showing. At 23 and in the midst of his third pro season, Olt will be making his Major League debut.
Martin Perez TEX Demoted from Rangers to Triple-A Round Rock
Leonys Martin TEX Demoted from Rangers to Triple-A Round Rock
Neil Ramirez TEX Activated off Double-A Frisco DL (shoudler soreness)
Marcus Stroman TOR Promoted to Double-A New Hampshire
Aaron Sanchez TOR Placed on Class A Lansing DL
Moises Sierra TOR Promoted from Triple-A Las Vegas to Blue Jays
Jeff Kobernus WAS Placed on Double-A Harrisburg DL

Andrew Pentis is a contributor to MLB.com. Follow him on Twitter at AndrewMiLB. This story was not subject to the approval of the National Association of Professional Baseball Leagues or its clubs.
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