Later in the day, sixth-ranked Felix Auger-Aliassime of Montreal bounced Vernon, B.C., native Vasek Pospisil 1-6, 7-6 (4), 7-6 (3), 6-3.

Source: https://www.abbynews.com/sports/canadas-andreescu-shapovalov-and-auger-aliassime-win-aussie-open-openers/

Marginally more physically developed than Burke, Vasek is a high-effort player with an effective spin move and the ability to run the arc and has some understanding of using counter moves to the inside.

Source: https://www.burntorangenation.com/2023/3/7/23629290/texas-longhorns-edge-spring-preview-barryn-sorrell-justice-finkley-ethan-burke-colton-vasek