Australia's T20 World Cup campaign faced a significant setback as captain Mitchell Marsh was ruled out of their opening match against Ireland due to a groin injury. According to ProPakistani, Marsh suffered a 'blow to the groin during training,' which led to 'internal testicular bleeding,' necessitating a period of rest and rehabilitation. This unexpected turn of events occurred just 15 minutes before the toss in Colombo, as reported by ESPN Cricinfo. In Marsh's absence, Travis Head has been appointed as the stand-in captain for the match at the R. Premadasa Stadium, with Matthew Renshaw joining the team as a replacement. The injury to Marsh has left Australia with only 12 available players for the match against Ireland, highlighting the team's current injury woes.