Cowboys’ decision to keep Terence Newman already looks shaky

The Cowboys reportedly went after Nnamdi Asomugha, but couldn’t close the deal. They didn’t show interest in Johnathan Joseph. Instead, the team made the decision to retain cornerback 32-year-old cornerback Terence Newman for $8 million despite the fact he was coming off a rough 2010 season.   He had to to take painkilling injections before…