Valentine: Youkilis not as much into the game  —  This is sure to cause some issues.  —  Red Sox manager Bobby Valentine was on WHDH's Sports Xtra show Sunday night and said this about Kevin Youkilis:  —  “I don't think he's as physically or emotionally into the game as he has been in the past for some reason.

MLB: Umpire used improper mechanics  —  San Diego Padres' Jesus Guzman, left, and manager Bud Black talk with umpire Dale Scott after Guzman hit into a controversial triple play by the Los Angeles Dodgers in the ninth inning of a baseball game in Los Angeles Sunday, April 15, 2012.

What's the vibe in ChiSox clubhouse?  —  White Sox general manager Ken Williams doesn't want to compare his new manager, Robin Ventura, to his old one, Ozzie Guillen.  No, Williams is moving forward, talking about the present, not the past.  —  A rival executive takes a less diplomatic view …

Giants Extend Madison Bumgarner  —  The Giants don't have the most intimidating offense in the league, but they've got pitching and it's not going anywhere.  The team announced a five-year extension for Madison Bumgarner that will keep the left-hander in San Francisco through 2017.

Angels and Erick Aybar make progress on new contract  —  General Manager Jerry Dipoto says he is confident the two sides will work something out.  The shortstop is believed to be looking for at least five years and around $50 million.  —  Angels shortstop Erick Aybar tries to handle …

A's to put stadium issue on agenda for May owners' meetings  —  The Chronicle has learned that the A's plan to put their stadium issue onto the agenda for next month's owners meetings in New York.  —  A major-league source said the team is placing the stadium issue on the agenda in the hopes …

Willingham wins AL Player of the Week honor  —  Outfielder batted .455; has 11-game season-opening hit streak  —  Twins left fielder Josh Willingham was named on Monday the American League Player of the Week.  It was second such award he has received in his career, the other being in 2009 when he was with Washington.

Mariners Sign Hersin Martinez For $1.1 Million  —  The Mariners have signed 17-year-old Dominican corner outfielder Hersin Martinez for $1.1 million, according to the Dominican Prospect League.  —  Martinez is 6-foot-5 righthanded hitter who had long been tied to Seattle.

Clemens trial resumes with jury selection  —  WASHINGTON — Roger Clemens returns to a federal courtroom this week to defend himself against the United States government, which contends the former star pitcher lied when he testified before Congress in 2008 and said he never used performance-enhancing drugs.

NEW YORK (AP) — Derek Jeter hit a three-run homer to extend his fast start and Ivan Nova won his 14th straight decision, leading the New York Yankees to an 11-5 victory over the Los Angeles Angels on Sunday night.  —  Raul Ibanez added a titanic homer and Jeter also doubled during a four-run rally …