BASEBALL

DETROIT TIGERS—Placed LHP Dontrelle Willis on the 15-day DL. Recalled OF Ryan Raburn from Toledo (IL).

TAMPA BAY RAYS—Transferred RHP Chad Orvella from the 15- to the 60-day DL.

TEXAS RANGERS—Placed LHP Eddie Guardado on the 15-day DL, retroactive to April 5. Activated RHP Luis Mendoza from the 15-day DL. Recalled RHP Scott Feldman from Frisco (TL). Optioned RHP Kazuo Fukumori to Oklahoma (PCL).

ATLANTA BRAVES—Released INF Scott Spiezio from his minor league contract.

HOUSTON ASTROS—Purchased the contract of INF David Newhan from Round Rock (PCL).

PHILADELPHIA PHILLIES—Placed OF Shane Victorino on the 15-day DL. Recalled OF Chris Snelling from Lehigh Valley (IL).

ST. LOUIS CARDINALS—Activated RHP Joel Piniero from the 15-day DL. Optioned RHP Kelvin Jimenez to Memphis (PCL).

SAN FRANCISCO GIANTS—Recalled OF John Bowker from Fresno (PCL). Optioned OF Clay Timpner to Fresno.

WASHINGTON NATIONALS—Optioned RHP Jason Bergmann and C Jesus Flores to Columbus (IL). Activated RHP Chad Cordero and OF Wily Mo Pena from the 15-day DL.

BASKETBALL

SEATTLE SUPERSONICS—Signed F Ronald Dupree for remainder of the season.

HOCKEY

National Hockey League

DETROIT RED WINGS—Recalled G Jimmy Howard, D Jonathan Ericsson, D Jakub Kindl, D Kyle Quincey, F Cory Emmerton, F Darren Helm and F Mattias Ritola from Grand Rapids (AHL).

EDMONTON OILERS—Signed F Robert Nilsson to a three-year contract

OTTAWA SENATORS—Recalled C Alexander Nikulin from Binghamton (AHL).

PHOENIX COYOTES—Signed F Chad Kolarik.

ECHL

UTAH GRIZZLIES—Announced D Jeff Dwyer and F Tyler Haskins have returned from Bridgeport (AHL).

COLLEGE

COLORADO—Dismissed junior LB Jake Duren from the football team following his arrest.

LOUISIANA TECH—Named Teresa Weatherspoon women's associate basketball coach.