He subsequently earned All-State, All-District and All-Metro selection, and was named the district's Defensive Player of the Year.

As a junior in 2013–14, he increased his numbers in every statistical category, averaging 6.5 points, 6.7 rebounds and 1.7 blocks in 17.6 minutes per game, while starting all 35 contests.

[1] As a senior in 2014–15, Holyfield set the school's single-season blocks record with 86 and subsequently earned Southland Conference Defensive Player of the Year honors.

[8] On October 31, 2015, Holyfield was acquired by the Iowa Energy of the NBA Development League as an affiliate player of the Grizzlies.

[10] In the D-Fenders' regular season finale on April 2, Holyfield had a season-best game with 19 points and 15 rebounds in a 128–121 loss to the Rio Grande Valley Vipers.

[13][14] He made his debut for the Hawks in their season opener on October 7, 2016, recording 14 points, six rebounds and two blocks off the bench in a 122–88 win over the Adelaide 36ers.

[19] On August 21, 2024, Holyfield re-signed with the Hsinchu Toplus Lioneers of the Taiwan Professional Basketball League (TPBL).