Andy Pettitte and the Yankees will host the Mets in this first installment of this year's Subway Series.

Brian Roberts could make his MLB debut for BAL in less than a week, creating problems for slump-ridden Robert Andino. Alex Avila hits the DL, OAK changes 1B again, and more ...

Huston Street (RHP, SD), who has missed the past month due to a lat strain, was activated from the disabled list, and should immediately return to the closer role. He has posted a triple-digit BPV each of the past three seasons, and was off to a strong start this year as well. Prior to suffering the injury, Street appeared in 10 games, collecting four saves, with a 0.93 ERA and 6.5 Cmd.

Desmond Jennings should be back in the leadoff spot and LF for TAM vs. NYY on Tuesday. The black hole that is the Dodger 1B spot gets another candidate, Vance Worley returns, and more ...

Matt LaPorta... Brett Wallace... Fernando Martinez... At one point, all occupied lofty positions on many a prospect ranking list. Now, all three are back in the majors. What are their chances of success, and how long might they stay?

Another fun week at the office watching the waiver wire and transaction wires run at full speed. Even with all the disabled list moves we've had, just a tad over 250 so far, this is not a record setting pace—yet.

This NL Midweek Series Matchups column will cover seven three-game series and one four-game set.

This AL Midweek Series Matchup column previews one four-game series and six three-game series.

After missing all of 2011, Jason Castro is seeing extensive playing time for the Astros with not much to show for it—yet. We also look at the impact of Torii Hunter's return to the Angels as well as some old faces back in familiar places. And is a legend being born in Detroit?

Carlos Beltran (OF, STL) made his first CF start since 2010 Friday, making room in the lineup for both Allen Craig (OF/1B, STL), activated from the DL to start in RF, and recent callup Matt Adams (1B, STL). Adams is 13-for-41, with an .890 OPS, while playing 1B regularly since Lance Berkman (1B/OF, STL) underwent knee surgery for a torn meniscus, likely sidelining him until August.

With Roy Halladay and Jered Weaver landing on the disabled list week, the fallacy that some players were shielded from going on the DL has been exposed.