Hartfield and Marshall can play multiple positions, and Arkansas offering them at their preferred positions was a deciding factor.
Hartfield primarily has been defense-minded, but Arkansas will use him on offense.
"I can do everything," Hartfield said. "Whatever the coach wants me to do, I can play receiver, cornerback, safety, return man. (Arkansas) likes me as an athlete, but they're going to use me as a receiver."
Marshall will go to the other side of the ball, as well. Primarily a running back in high school, he will initially move to safety.
"I'm familiar with the corner, the free safety and the strong safety positions, so I don't really see too much of a problem with it," he said. "With me being a running back for the majority of my life, it's my time to beat up on some people myself.
"If they ask me to carry the ball, I'm going to carry the ball, no doubt. But I'm just going to focus on hitting people now."
Here is a compilation of other official visit reports from across the country.
In a major move this weekend, Alabama has secured five-star defensive lineman A'Shawn Robinson of Fort Worth (Texas) Arlington Heights. Reports from Rivals.com national recruiting analyst Mike Farrell indicate that Robinson told Texas coaches on Saturday that he had decided on Alabama. Five-star Eddie Vanderdoes was on campus this weekend but was a decided long shot for Alabama, and securing Robinson was a massive addition. MORE:Nuggets on the board
After breaking his commitment to Mississippi State, four-star offensive lineman Deon Mix was on the Plains this weekend and said it gave him a lot to think about. Mix is 6-foot-4 and 305 pounds, which is likely going to have him lining up at guard or center for Auburn if he chooses to join the program. Mix said Mississippi State is still his leader entering National Signing Day, but Auburn, Georgia and Ole Miss are in the running. MORE:Open-minded Mix
Four-star receiver James Clark took his final visit this weekend to Florida but said he will not announce his decision until National Signing Day. He will trim his list on Monday. The newly ranked four-star said his time on campus was great and he enjoyed talking with wide receivers coach Joker Phillips. MORE:Four-star Clark talks Florida visit
In a wild weekend that didn't include much for official visits, Miami made a lot of noise nationally. The public spat between head coach Al Golden and Miami (Fla.) Booker T. Washington coach Tim "Ice" Harris took center stage. It may have drawn a line in the sand showing that Golden is the new sheriff in town. Miami is still in the mix for Washington players Denver Kirkland and Matthew Thomas. MORE:Kirkland meeting ends without commitment
One of the players on the Lincoln campus this weekend was longtime Louisiana-Lafayette commit Devin Scott. The 5-foot-11, 180-pound receiver recently caught the eye of the staff and earned an offer late in the process. It was the only visit he has taken to the school, so there was a lot to take in. Scott said he could see himself in the offense but did he flip? MORE:Tough decision lies ahead for Scott
The Beavers hosted only Justin Strong this weekend, but that doesn't mean the program was not actively recruiting other players. Del City (Okla.) athlete Corey Lawrence gave his verbal commitment to the coaching staff on Friday morning and boosted the class of 2013. The 6-foot-1, 175-pound Lawrence was a two-way player, but his coach believes him to be a more natural defensive back. MORE:Beavers start February with commitment
An unplanned five-star took in Austin this weekend when Memphis (Tenn.) Central defensive end Frank Herron made a trip to campus. He has been an LSU commit since June, but he has a relationship with Longhorns assistant coach Larry Porter. It made the prospect interested in seeing what the program had to offer. Swaying Herron could soften the blow from reportedly losing out on Robinson. MORE:Inside the 40 Acres on Herron | Inside the 40 Acres on Robinson
West Virginia added a strong piece to its recruiting class when Raymond (Miss.) Hinds Community College defensive end Dontrill Hyman committed on his official visit. Hyman checks in at 6-foot-4 and 267 pounds. He has been a strong lean to the program, and he sealed the deal on his trip. He figures to step in as a rush end when he gets to Morgantown. MORE:Hyman: 'Loved everything'