The Spaniard struggled to shake off Gasquet in an opening set but pulled through the tie-break to wrap up the match in two hours and 22 minutes inside Rod Laver Arena
The World No.1 Novak Djokovic made a winning start to his quest for a record-extending 11th Australian Open title with a 6-2, 6-7(5), 6-3, 6-4 triumph against Dino Prizmic in first-round on Sunday.
Rublev overcame a significant scare to defeat the Brazilian 7-5, 6-4, 3-6, 4-6, 7-6(10-6) and advance to the second round in Melbourne for the eighth time in eight outings.
Marsh, 40, retires from the sport following the retirement of his long-time Renegades and Aussie teammate Aaron Finch. In the last season, Marsh had called time on his first-class career with Western Australia.
Australia opener David Warner announced on Friday that he has found his baggy green cap after losing it four days ago while travelling from Melbourne to Sydney before the start of the third Test match against Pakistan.
The second Test at Newlands, saw India claiming a seven-wicket win with a total of 642 deliveries bowled in both innings. The Test was the shortest in the history of red-ball cricket, eclipsing the previous shortest involving Australia and South Africa in 1932 in Melbourne (656).
Big Bash League franchise Melbourne Renegades have called in Netherlands skipper Scott Edwards as the replacement for injured Joe Clarke according to ESPNcricinfo.
"Melbourne Renegades legend Aaron Finch will call time on his incredible Big Bash career, announcing this BBL|13 season will be his last," Melbourne Renegades said in an official statement.
Afghanistan's ace spinner Mujeeb Ur Rahman's season with Big Bash League franchise Melbourne Renegades has ended after the Afghanistan Cricket Board (ACB) revoked his No-Objection Certificate (NOC) for the remainder of the season according to ESPNcricinfo.