IT'S A SETUP  —  JOBA STARTS YEAR IN 'PEN  —  Joba Chamberlain will prepare during spring training as a starter, but will begin the season in the Yankee bullpen barring injury to any of the other five main rotation members, team officials confirmed to The Post.

Report: Pettitte's affidavit supports McNamee's version of events  —  Andy Pettitte's affidavit helps to support Brian McNamee's version of events that the former trainer gave Roger Clemens steroids and HGH, Rep. Tom Davis told Newsday.  —  Although Pettitte won't testify at Wednesday's hearings …

Doctors: HGH alone doesn't help athletes  —  WASHINGTON - With the Roger Clemens-Brian McNamee showdown on deck, four doctors took the stand on Capitol Hill Tuesday morning to assert that human growth hormone (HGH) and B12 probably aren't worth the trouble.  —  The House Oversight …

Congress hears experts on HGH, supplements  —  WASHINGTON — In the final warmup before the blockbuster hearing, Congress took aim at Rocky instead of the Rocket.  —  The House Committee that on Wednesday is expected to hear the differing viewpoints of Roger Clemens and Brian McNamee …

Roger, Roger.  What's our Vector, Victor?  —  Yes, it's another new look for the ol' blog.  We're like Madonna, people.  We're constantly changing — you want the slutty blog, bam, we'll give you the wholesome Don't Cry for Me Argentina blog.  You want the fun-loving, on the beach, Cherish blog, then we put cones on our breasts.

‘ROUTINE’ CHECK FOR MATSUI  —  Hideki Matsui stopped by the Hospital For Special Surgery yesterday in Manhattan to have a surgically repaired right knee examined by Dr. Scott Rodeo, who performed the operation in November.  —  “It was routine,” GM Brian Cashman said before getting the results of Matsui's exam.