[1][2][3] As a folkstyle wrestler, Pantaleo was a three-time NCAA DI All-American and a Big Ten Conference champion out of the University of Michigan.

[8] An unseeded wrestler, he then went on to place second at the prestigious Cliff Keen Memorial Invitational and racked up an 8–4 dual record during regular season.

[11] As a sophomore, Alec achieved All-American honors by placing sixth at the NCAA Division I national championships at 149 lbs.

A few weeks prior, Alec took third at the B1G conference championship with a 4–1 record, avenging an earlier season loss to former NCAA national champion Jason Tsirtsis with a 8–4 decision in the third-place bout.

He carried a 6–1 record at his final collegiate competition, avenging his only loss of the tournament to North Carolina State's Hayden Hidlay.

Alec took third at the Big Ten conference championship with a notable 10–4 win over Northwestern's third-ranked Ryan Deakin in the medal match.

[15] While overseas he posted a 1–1 record, defeating Georgi Sulava from Georgia[16] in the opening round, but eventually falling to Viaks Vikas from India in the following preliminary match.

Pantaleo went 2–1 in route to a bronze medal, beating former NCAA national champions Jordan Oliver and Anthony Ashnault.

Pantaleo beat 2019 world-finalist Daulet Niyazbekov of Kazakhstan in the opening round and gold medal match with respective scores of 6-2 and 4–0.

Pantaleo won all three of his matches by technical superiority, beating Carlos Romero Millaqueo from Chile with a score of 12–0 in the gold medal bout.

In his semi-final bout, Pantaleo defeated three-time world champion and Olympic Bronze Medalist Haji Aliyev of Azerbaijan with a score of 6-6.