At a quick glance, Vitters' numbers — .302, 14 home runs, 56 RBIs through Saturday — would seem to suggest a callup is overdue. That seems especially true with Chicago third baseman Ian Stewart on the disabled list and Luis Valbuena struggling as his replacement.
"They really haven't told me anything specific (to work on)," Vitters said. "I just assume it means I need to get better at everything. I'm not there for a reason. It's because I need to get more repetition, I need to improve every single day as much as I possibly can."
The primary criticisms he has endured are his lack of patience at the plate — his 24 walks this season are a career high — and his defense (18 errors).
"I don't think you can really walk, especially at a high level in the Minor Leagues, unless you're at least feared to some extent by the other teams," Vitters said. "If you get up in the three- or four-hole and you start putting up some numbers, then the walks start coming."