But Johnson doesn't worry that he's not earning his money.
"You don't get a big contract over expectations. You get a big contract over things you have done," Johnson said Wednesday, according to the Tennessean.
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The running threat posed by the former Tennessee quarterback opened up rushing lanes for Johnson, Bucky Brooks writes. More...
What he did last Sunday in a victory over the Indianapolis Colts was rush 14 times for just 34 yards.
"This is a situation where it can't get no worse, really, so it can't do nothing but go up," Johnson said. "I'm always eager to get back on the field and practice after a bad game and try to make it better."
"They're pretty good," Johnson said. "They are disciplined. They stay in their lanes and things like that. They don't make many mistakes, but there are still teams out there who are able to have a little success against them."