2021-22 (Western Carolina)

The Wichita, Kansas, native played in 32 games last season with 30 starts for the Western Carolina Catamounts. He averaged eight points per game, including 13 games scoring in double-figures. He scored a season-high 20 points at Mercer on January 22, where he made 5-of-10 shots from long range. He had 16 games with multiple made three-pointers and pulled down a career-high 11 rebounds against Bowling Green in the season opener for a 14-point, 11-rebound double-double, the first of his career. He also had 19 blocked shots and eight steals on the season, with four games with multiple blocked shots. For the year he made 39.6 percent (89-of-225) of his shots from the field and 58-of-168 (34.5%) from long range. Petrakis ranked 10th in the Southern Conference in blocked shots per game, 15th in three-pointers made during conference play, and 10th in blocked shots per game overall.

2019-21 (Kansas State)

A season earlier he played in 11 games for Kansas State, coming off the bench in each. He played a season-high 15 minutes on January 9 against Oklahoma State, where he scored a season-high six points with two rebounds. He made 3-of-7 long-range shots during the season, and 5-of-13 overall from the field.

2018-19 (Dodge City)

While at Dodge City in 2018-19 he played in 30 games with a dozen starts. He averaged 4.8 points and 3.1 rebounds per game for the Conquistadors, scoring in double-figures four times including a season-high 14 points at Barton on February 9.