Miguel Olivo (C, SEA) was back behind the plate on Thursday, a day after taking his first rest of the season on Wednesday, yielding to Jesus Montero (C/DH, SEA). The Mariners got a good night out of John Jaso (C, SEA) on Wednesday, who served as the DH and got two hits in four AB. With both Montero, 22, and Jaso, 28, one wonders if Olivo's playing time could be at risk as we get further into the season.

Opening with three kings: Oakland to face Felix Hernandez for a third time already when they play Seattle on Friday.

[FREE] Dustin Moseley's (RHP, SD) MRI on his sore shoulder came back much worse than expected, and with Tim Stauffer (RHP, SD) still on DL, the Padres have been forced to change their rotation for their final game in Arizona and their upcoming series with the Dodgers. Moseley's MRI showed "extensive damage," and while no timetable has been set for his return, it is clear that he's likely to miss far more than the minimum 15 DL days.

This NL Weekend Series Matchup column previews seven three-game series and one four-game set.

David Wright was initially listed in the April 10 lineup, but was later scratched due to a swollen pinkie. Results of the x-rays aren't yet known, but the swollen finger is currently making it difficult for him to swing the bat. Ronny Cedeno, who had made just three previous starts at third base in his career, took Wright's spot in the lineup, and would be among the candidates to see increased playing time should Wright miss any additional time.

Michael Saunders has another MLB starting shot only because of Franklin Gutierrez' injury. But their recent performances suggest that questions may remain after Gutierrez returns in a few weeks ...

What began as faint rumblings that we initially passed off as "spring-training noise" has proven to be anything but: The man getting the ball in the ninth inning for the White Sox—at least initially—would seem to be the least-skilled and least-experienced of all the candidates.

This NL Series Matchups column previews eight different NL series, all beginning on Monday and wrapping up by Thursday.

This AL Midweek Series Matchup column previews six three-game series and one four-game set. Toronto and Minnesota will be hosting their home openers, with all other home teams continuing their season-opening homestand.

On Opening Day 2012, Andres Torres (OF, NYM) re-aggravated a calf injury forcing him to the DL. The Mets called up 24 year-old prospect Kirk Nieuwenhuis to fill that roster spot, hoping he can provide quality starts in CF. He will have his opportunity to prove his value in the coming weeks...will he be able to earn playing time over Scott Hairston (OF, NYM) and even Torres upon his return?

Now that all of the positional injury reports are done, how can they help you both on draft day and during the season in managing your roster? In general use the charts below and reports under Dr. HQ as an overall look at each position and leagues. It’s not a foolproof system but it does tell you where the injury mine fields are so you can adjust your draft strategies. Here's several examples of how to use these reports is to help increase your odds of winning your league.