Posted by ESPN.com's Mike Sando
The 49ers confirmed tackle Marvel Smith's retirement Saturday morning. What now?
Adam Snyder is still the starter on the right side. That was not going to change even if Smith tried to continue playing despite back trouble.
Depth is the problem and this situation was predictable, even likely, given what we knew about Smith's health and how the 49ers' neglected to draft a tackle or sign a younger veteran in free agency (as someone suggested they should).
None of this will matter much if Snyder returns from his knee injury to start most of the games. The 49ers could then try to develop Alex Boone and/or target a tackle in the draft. Their thinking in drafting Michael Crabtree with the 10th overall selection hasn't worked out as anticipated so far, but I think the reasoning was sound and No. 10 was too early to select one of the remaining tackles. Right tackle is not a premium position.
Some have asked why I suggested former Eagles tackle Jon Runyan as a possibility for the 49ers without mentioning the Seahawks as a logical destination as well. Runyan is strictly a right tackle. Seattle has two players able to start at right tackle (Sean Locklear and Ray Willis) but only one player (Locklear) able to start at left tackle. Adding Runyan would not improve the Seahawks' depth at left tackle, which is their position of need while Jones is unavailable.
The 49ers need a right tackle for insurance. Runyan is coming off knee surgery. He might not be ready right away. The 49ers do not need him right away. They need insurance. I have no idea if Runyan would even consider moving across the country. But when I think of tough, physical tackles in the 49ers' mold, Runyan comes to mind.