BOSTON – Boston Red Sox reliever Bobby Jenks has undergone a second spinal decompression procedure that could delay the start of his spring training

The Red Sox confirmed the procedure Thursday.

Jenks, 30, is in the second year of a two-year, $20 million contract. He appeared in just 19 games last season with lingering back pain.

The normal recovery time is eight weeks. Spring training begins Feb. 19 for pitchers and catchers.

ROCKIES-RANGERS: Colorado acquired minor league infielder Chad Tracy — the son of Manager Jim Tracy — from Texas for right-hander Greg Reynolds, the No. 2 selection in the 2006 amateur draft out of Stanford.

RANGERS: Texas hired outfielder Josh Hamilton’s father-in-law as a staff special assistant.

Michael Dean Chadwick will fill a support role as an accountability partner for Hamilton that was left vacant when Johnny Narron left in November to become Milwaukee’s hitting coach.

ANGELS: Albert Pujols is receiving more than $240 million from the team. In addition, he received four season tickets to home games over the next decade. After that, if he still wants them, he has to pay.

Other perks in his contract include a hotel suite on trips; a luxury suite at the ballpark for the Pujols Foundation, his charitable group, for 10 home games a year; and the right to buy a luxury suite between first base and third base for home games.

TIGERS: First baseman Miguel Cabrera pleaded no contest in Fort Pierce, Fla., to drunken driving last February.

ATHLETICS: Outfielder Coco Crisp re-signed a $14 million, two-year deal with a club option for 2014.

ROYALS: First baseman Billy Butler won the Hutch Award, given annually to a major leaguer for his work on and off the field.

DODGERS: Los Angeles re-signed reliever Mike MacDougal, 34, to a $1 million, one-year contract with a club option for 2013.

YANKEES: The team failed to sign shortstop Hiroyuki Nakajima, who will return to his Japanese team.

MARINERS: Japanese infielder Munenori Kawasaki, a 30-year-old infielder, said he’s been invited to spring training.