Juniors McDonald had a successful junior career which involved winning the 2002
provincial Bantam championship (playing lead for Andrew Nixon), the 2004 provincial school boy championship for London's
St. Thomas Aquinas Catholic Secondary School, Murphy, however, opted not to attend the event due to travel restrictions. Murphy's team of
Paul Flemming,
Scott Saccary and
Phil Crowell then invited McDonald to skip them at the national championship in
Calgary,
Alberta. At the 2021 Brier, McDonald led Team Nova Scotia to a 4–4 record, failing to qualify for the championship round.
Mixed doubles McDonald went to his first national championship when he and
Jaclyn Rivington won the provincial mixed doubles challenge. The pair went to the
2013 Canadian Mixed Doubles Curling Trials. After going 7-0 in the round robin, they were eliminated in their first playoff match.
Mixed McDonald won the Ontario Mixed Championship in 2022 with teammates
Lori Eddy,
Matthew Hall and Laura Neil, and represent Ontario at the
2023 Canadian Mixed Curling Championship. There, Team McDonald would finish the round robin with a 7–3 record, qualifying for the playoffs. After losing in the semifinals to Manitoba, they would rebound and win a bronze medal, beating Nova Scotia's
Paul Flemming 8–3 in the bronze medal game. ==Personal life==