MacGinnis shared the award with Florida State's Roberto Aguayo.
A native of Alabama, MacGinnis tied his career high with three field goals made against the Volunteers, including the 54-yarder in the second quarter that topped Doug Pelfrey's previous mark of 53 yards set twice in 1991 against Indiana and Cincinnati. MacGinnis also connected from 32 and 30 yards out.
MacGinnis has made and SEC-high 17 of his 23 field goal attempts this season and converted all 37 of his extra points, owning a team-high 88 points scored.
He is one of only three kickers in the NCAA to have at least three 50-plus field goals this season.
In addition, UK senior defensive end/linebacker Bud Dupree was tabbed an honorable mention defensive lineman performer of the week, after totaling a career-high 14 tackles against the Vols.