[2] Lynn played for the Queensland under-19 side and made his first-class debut as a 19-year-old against South Australia at the Gabba in March 2010.

In the following match against the Mumbai Indians, he injured his shoulder while attempting to take a tough catch of Jos Buttler.

Playing for Brisbane Heat in the Big Bash League hit 101 off 51 deliveries against the Hobart Hurricanes.

[17] Lynn's form continued in the next edition of the Big Bash League, ending the season as the player of the tournament despite playing just five matches.

In the 2021–22 Big Bash League season, Lynn scored 215 runs at an average of 17.91, which followed in his axing from the club.

[22][23] On 3 June 2018, he was selected to play for the Edmonton Royals in the players' draft for the inaugural edition of the tournament.

[24][25] In June 2019, he was selected to play for the Winnipeg Hawks franchise team in the 2019 Global T20 Canada tournament.

[26] In July 2020, he was named in the St Kitts & Nevis Patriots squad for the 2020 Caribbean Premier League.

[29] In July 2019, he was selected to play for the Edinburgh Rocks in the inaugural edition of the Euro T20 Slam cricket tournament.

During a game in the Big Bash League, playing for the Brisbane Heat, Lynn hit a ball from former Australian fast bowler Shaun Tait onto the roof of The Gabba.

[44] Lynn set a new record with his explosive knock hitting 91 runs from 30 balls playing for Maratha Arabians against Abu Dhabi in T10 league.