ARLINGTON, Texas -- It appeared that tonight's start against the Seattle Mariners was going to be a critical one in the Roy Oswalt sweepstakes. Well, not anymore.

Scott Feldman will still toe the rubber tonight. And he'll probably do so for the next three weeks, but the Texas Rangers decided to acquire some insurance by agreeing to terms with Oswalt. Read all about that here. A source said the time frame is likely around June 20 for Oswalt to be ready to join the rotation. That means he'll go to the minors and build up some arm strength and face live hitting. (I thought how Feldman did tonight might go a long way toward determining what the club would do on Oswalt, but the Rangers decided before that.)

Neftali Feliz could be sidelined until the All-Star break, so the Rangers are already down one starter. They could have stuck with Feldman, but what if someone else went down? And with other teams reportedly lurking on Oswalt, the Rangers pounced.

If no one else is injured and Feliz is ready to return, this certainly points toward a return to the bullpen for the former closer.

The bottom line: The Rangers wanted to build up depth in the starting rotation. And they did it by signing someone with a strong track record of success, but injury issues. If Oswalt's back holds up, he could become a key part of the rotation down the stretch and into the postseason.

How do you think Oswalt will do? Is this the right move?