Dahl says Niners tipped plays last year

Now we know why the 49ers hired defensive guru Eric Mangini to serve as an offensive consultant. Safety Craig Dahl, who played last year for a Rams team that went 1-0-1 against the eventual NFC champions, said Wednesday that the Niners tipped offensive plays based on personnel and formation, according to Matt Maiocco of CSNBayArea.com.…