Romanowski: Aldon Smith, Kaepernick need to step up

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Former 49er Walker honors late aunt, uncle with charity event 267136	Dahl on joining 49ers: 'Not the enemy anymore' 266981	Q&A with Olympic boxer Marlen Esparza 266646
Will Romo close for Giants all year? 266421	Bigger impact in 2013: Anquan Boldin or Percy Harvin? 266451	Marleau on tight race: 'These points are huge for us' 266336
Dan Skuta eager to contribute immediately 266341	Who is the most important Warriors down the stretch? 266311	Battle for supremacy: Offseason moves bolster NFC West 265721
Purple Heart Marines talk about involvement in 'Strikeouts for Troops' 265461	Reid: 'Alex is the starting QB for the Kansas City Chiefs' 265431	Chiefs QB Alex Smith: 'I'm ready for this' 265381