Southern Arkansas righthander Hayden Simpson, the 16th overall pick in the draft, has agreed to terms with the Cubs on a $1.06 million bonus. His signing is expected to become official this weekend.

Simpson, rated No. 191 on Baseball America's Top 200 Prospects list, was the biggest surprise selection in the first round. While the Cubs believed he was a legitimate first-round talent, they also took a discount on MLB's recommended bonus for the No. 16 slot, which was $1.512 million in 2009. Had Chicago waited until the second round to draft him, the slot for that pick (No. 65) was nearly $1 million less ($562,500) a year ago.

It's believed that the Cubs and Simpson worked out a deal shortly before the team made the pick official.