The Cardinals formally announced the signing of supplementary first rounder Seth Blair, according to MLB.com's Matthew Leach (via Twitter). The Cards selected the 21-year-old right-hander 46th overall in last month's draft. Three years ago, the A's selected Blair in the 47th round, but he attended Arizona State instead.
The Cardinals signed Blair for $751,500, according to Baseball America's Jim Callis. That matches MLB's slot recommendation.
Earlier in the week, we heard that the Cards were close to finalizing an agreement with Blair, so tonight's news is no surprise. Click here for the complete list of top picks to sign.