The Seahawks' three-day rookie minicamp concluded on Sunday afternoon, with 66 players taking to the field at Renton's Virginia Mason Athletic Center.

Here's eight things we learned from day three of the team's workouts, a day that saw head coach Pete Carroll, assistant head coach/offensive line coach Tom Cable, and cornerback-to-linebacker convert Eric Pinkins meet with the media:

1. Frank Clark & Tyler Lockett Had Good Starts

The team's first two picks in the 2015 draft were among the standouts the past three days at Seahawks headquarters.

Frank Clark, who Seattle chose in the second round (No. 63 overall), played a different spot each day - defensive end, LEO, and as a pass-rushing defensive tackle inside.

"As we put all that film together and look at how he moved and get a feel for how comfortable he is, it'll give us a good first indication of what we can do with him," Carroll said of Clark. "He's very quick. Gets off the ball really well, and that's really exciting for pass rushing."

Carroll said the team used rookie minicamp to try and gather as much information as possible on Clark with the hope of understanding how to best utilize him in the Seahawks' defensive line rotation.

"There's not much limitation to what we can do with him," Carroll said. "He has the ability and the range and he seemed to pick things up very, very easily. He's going to be a very versatile player for us."

Tyler Lockett, the wide receiver/return specialist the team traded up to take in the third round (No. 69), hauled in a long touchdown pass from R.J. Archer on Sunday.

"Tyler looked so comfortable," said Carroll. "He's an adept football player. He's a very natural player. He has a terrific sense for releasing and getting off the line of scrimmage and space stuff and finding his way down field against the zones and all. He caught the ball beautifully. He looked really fast. He did really good catching the ball in the opportunities on the catch-return stuff.

"He had a great start and he had no trouble with any of the learning, so that was a really good start for us."

2. It Will Be The Most Competitive Training Camp For The Offensive Line

Carroll referred to the offensive line as the focal point of this weekend's rookie minicamp.

According to the Seahawks coaching staff, among those that shined were fourth-round draft picks Terry Poole and Mark Glowinski, sixth-round selection Kristjan Sokoli, undrafted free-agent signee Jesse Davis, and tryout player Kona Schwenke out of Notre Dame - a former defensive lineman.

"Without any hesitation, they all move really well," Carroll said. "They all come out of their stance and they can move well enough to be in the zone-scheme. That's a big criteria. They pick things up."

Cable said he sees Poole at guard and center, Glowinski at guard and tackle, and Davis at left and right tackle, while Sokoli will focus strictly on the center position. The O-line guru said he can't wait to see how the four pair up with the team's veteran players this summer.

"I think it'll be the most competitive camp for the offensive line, from here out moving forward through training camp," said Cable. "That's good. We'll get the best out of some people and it'll be pretty cool."

3. Kristjan Sokoli Is The Fastest O-Lineman The Seahawks Have

Carroll called sixth-round draft pick Kristjan Sokoli, a defensive tackle at Buffalo who the Seahawks will work on converting to center, the quickest lineman Seattle has on its roster.

"He's the most mobile guy," Carroll said. "We need mobility at that spot. It's a position that really calls for a guy to get on the second level quickly and be able to adjust to linebackers, so the athleticism is really a factor there.

"[J.R.] Sweezy will take offense to this, but he's our fastest lineman."

Cable thinks the most difficult part of Sokoli's transition to offense will be learning to multi-task. On each down, Sokoli will be asked to communicate at the line of scrimmage, snap the football, step into his blocking assignment, and then call the huddle for the next play.

"That all has to come bam-bam-bam for him every play," said Cable.

Seattle knows Sokoli is making a big transition that will take time, but the coaching staff came away impressed with his initial efforts in minicamp.