Ricardo Preston Ratliffe (Korean: 라건아; RR: Ra Gun-ah[1]; born February 20, 1989) is an American-born South Korean professional basketball player who last played for the Magnolia Chicken Timplados Hotshots of the Philippine Basketball Association (PBA).

He averaged 10.6 points and 6.0 rebounds per game in his junior season and was named Big 12 Conference Newcomer of the Year.

[2] Ratliffe spent much of the season chasing the all-time single-season NCAA record of 74.6%, held by Steve Johnson of Oregon State, leading the mark as late as February 2012.

[6] In 2014, Ratliffe won the William Jones Cup MVP and joined teammates Chang Yong Song and Tae Young Moon on the tournament Best Five.

On March 5, 2016, Ratliffe was signed by Star Hotshots of the Philippine Basketball Association (PBA) to replace Denzel Bowles who had to leave for the United States after the death of a relative.

[9] On November 11, 2019, Ulsan Hyundai Mobis Phoebus traded Ratliffe and Lee Dae-sung to Jeonju KCC Egis.