[3] Waselenchuk was undefeated in completed matches between January 2009 and September 2013 with his only losses coming from defaults due to injury.

In his first tournament in April 2000 at age 18, Waselenchuk made it to the quarter finals before falling to Cliff Swain in five games.

Then in October he played in his first US Open and upset defending champion Jason Mannino in the Round of 32 before falling in the quarters to Álvaro Beltrán.

[1] Waselenchuk won his first IRT tournament in October 2001 a few weeks short of his 20th birthday, defeating John Ellis in the final of the Chicago event.

He regained the US Open title – his fourth, although did lose some games on the road to the final, including two in a tie-breaker win over Beltran.

[1] Waselenchuk won 9 of the 10 IRT events in the 2009–10 season – defeating Jack Huczek in six finals and Rocky Carson in two, and Ben Croft in another.

Waselenchuk entered the 2011 New York City Pro-Am, but withdrew due to illness prior to his semi-final with Jack Huczek.

He won 10 of the 14 Tier 1/Grand Slam events in the 2015–16 season to finish #1 by a fair margin over his competition and secure his 11th pro title.

He suffered what appeared initially to be an innocuous looking knee injury in a semi finals win in January 2018's Canoga Park event, but it turned out to be a Grade 2 MCL sprain that cost him most of the second half of this season.

When Rocky Carson secured a place in the finals of the Sarasota, Florida pro event in April 2018, he was guaranteed to finish no higher than #2 for the year.

Immediately after downing Carson for the final title of the year on 4/28/18, and hours after he was dethroned as champ after a decade on top, Waselenchuk announces that he is "90% sure that he's retiring" in his post-game interview on the court[7] (see the 46:30 point of the Facebook Live video link).

In October 2020, he partnered with Ben Croft and made an impressive run to the finals of the 3WB grand slam in Las Vegas, losing to what many considered to be the top outdoor team at the time, Daniel De La Rosa and Alvaro Beltran.

Later, in 2023 Waselenchuk entered the Outdoor Nationals in Huntington Beach, CA, this time playing with Alvaro Beltran.