As a junior, he batted .444 and was named First Team All-County by the Sun Sentinel and Miami Herald.

[4] Playing in 2018 as a junior for South Florida, Villar led the league with 24 doubles (9th-most in the country, and a Conference record) and 8 sacrifice flies.

[7] He batted .275/.374/.506 with 70 runs (3rd in the Northeast League), 29 doubles (4th), 20 home runs (7th; a single-season franchise record), 46 walks (5th), 112 strikeouts (6th), 15 hit by pitch (leading the league) in 385 at bats, playing 92 games at third base and 13 games at first base.

His first Major League hit came that day on the first pitch in his first at bat, a double in the second inning against Madison Bumgarner and the Arizona Diamondbacks.

[13] On July 8, Villar hit his first career home run, a solo shot off of San Diego Padres starter Blake Snell.

[14] On September 7, Villar enjoyed his first career multi–homer game against the Los Angeles Dodgers, with two–run homer off of starter Clayton Kershaw, and a solo shot off of reliever Justin Bruihl.

[16] After the season, he was chosen for the Pacific Coast League Most Valuable Player Award, and named third baseman on the post-season PCL All Star team.

[16] On April 3, 2023, in a game against the Chicago White Sox, Villar hit two home runs off of Michael Kopech, with the second homer being his first career grand slam.