FAYETTEVILLE, Ark. — There were plenty of key additions out of the transfer portal during the offseason, but Jahiem "Joker" Johnson figures to be the most impactful of all at cornerback.Johnson, 6-foot, 195 pounds, recorded 42 tackles, four interceptions and nine pass breakups on his way to All-American Conference honorable mention honors for the Green Wave. He was the standout on a unit that finished No. 126 nationally by allowing over 268 passing yards per game and 23 touchdowns.For Johnson, he shutdown many of the receivers opposite of him, as he graded out at 77.1 overall and received a coverage grade of 76.2, according to Pro Football Focus. Once the transfer portal closed, the Hammond, La. native finished as the No. 222 ranked transfer and No. 15 among cornerbacks and will be expected to patrol one boundary of Arkansas' defense this fall.There is no secret about how bad Arkansas' defense has been, especially on the backend where inconsistencies such as blown coverage, missed assigments, and tackling issues plagued former coach Sam Pittman's tenure.Arkansas defensive back Jahiem Johnson goes through drills during a Razorbacks spring practice. | Jahiem Johnson, InstagramRazorbacks Pass Coverage Ranking2025: 239.3 ypg; No. 104 FBS2024: 246.9 ypg; No. 111 FBS2023: 202.8 ypg; No. 32 FBS2022: 294.7 ypg; No. 131 FBS2021: 213.8 ypg; No. 41 FBS2020: 259.6 ypg; No. 102 FBSJohnson wants to come in and change the outlook on Arkansas' defense under a trio of new defensive back coaches Deron Wilson, CJ Wiliford and Eddie Hicks. He isn't the lone newcomer either, as Miguel Mitchell is the lone returnee from last season among 18 other transfers or true freshman.When I first entered the portal, they were probably the first team to call, and they're doing my first visit," Johnson said on March 30. "I like the defense, good people, and like what we were talking about, like they're coaching me up on stuff I hadn't been coached on before.