There has been a fair amount of discussion about the possibility of the Green Bay Packers selecting a running back in the first round of the 2013 draft. The debate has centered around a small handful of candidates, including Alabama's Eddie Lacy and Wisconsin's Montee Ball, and on Thursday we learned more about Lacy's standing.

Lacy finally ran a 40-yard dash and performed positional drills after a hamstring injury he suffered in February. Based on reviews of those who were in attendance, Lacy neither dramatically helped nor hurt his status and finished the day where he started: as a borderline first-round pick.

According to ESPN.com's Alex Scarborough, one scout timed his two runs at 4.59 and 4.62 seconds. Representatives of the Senior Bowl had him between 4.58 and 4.62 seconds.

NFL.com's Bucky Brooks, a former player and scout, was critical of Lacy's conditioning and performance in positional drills, tweeting that Lacy "literally shut it down during the positional workout. He was huffing and puffing and unable to finish drills." That caused scouts to "leave with more questions" than they arrived with, according to Brooks.

Brooks added: "When you draft a RB with a 1st round pick, you expect him to be the workhorse runner, not a rotational player. Durability & stamina matters."

We should note that Lacy is a 5-foot-11, 231-pound running back. His 40 time wasn't going to be elite. But if he wasn't able to complete his workout Thursday, we can at the very least say teams will have to make a draft decision based almost exclusively on tape rather than pre-draft workouts. That's an iffy proposition at best.