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Marsh, last in action in Australia's T20I series in New Zealand in the first week of March, is understood to have been worried about the seven-day quarantine followed by the long stretch in biosecure bubbles - like everyone else - for the duration of his team's presence in the competition.
Roy, who had opted out of the Delhi Capitals' campaign in IPL 2020 because of personal reasons - and had been replaced in the team by Australian pace bowler Daniel Sams - was released by the franchise ahead of the 2021 auction. Most recently, turning out for England in the white-ball series in India, Roy showed good form, scoring 144 runs in five T20I innings - with a strike rate of 132.11 - and following it up with 115 runs in three ODI innings, striking at 123.65.
Marsh, who was bought by the Sunrisers for his base price of INR 2 crore in the 2020 auction, lasted just four balls in the team's season-opener against the Royal Challengers Bangalore in Dubai before hurting his ankle. He batted at No. 10 in the chase and was dismissed for a first-ball duck, before leaving the competition.
Jason Holder was drafted in as his replacement and had a telling impact on the Sunrisers' fortunes, making useful contributions with the bat and picking up 14 wickets in seven games as they reached the playoffs of the competition.
* The article was updated following the IPL issuing a statement at 12.50pm GMT on March 31, 2021