"We did well to get to 234 after the early wickets, 250 would have been better. Ultimately the early wickets cost us," Morgan said after the three-wicket loss here today.
England managed to post a 235-run target for Australia riding primarily on Morgan's 121-run knock. The rest of the line-up found the going tough, especially against pacer Mitchell Starc, who returned figures of 4 for 42 in 8.5 overs.
"I was happy with my performance to start like this as captain but devastated at the result. (Chris) Woakes bowled well, Moeen Ali held his own as well. Looking forward to play India after four days," he added.
His rival number George Bailey lauded his team for not just pulling off a win but also getting a bonus point. Australia's chase, highlighted by opener David Warner's 127, derailed for some time by the loss of quick middle order wickets.
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"It's a challenging tri-series here. We were reasonably late to go for the bonus point, maybe in the Powerplay and Warner deserved to get his hundred. We made sure he got it and then went for the win, trying to make sure it didn't get messy," he said.
Man of the Match Starc said he is pleased with his performance.
"There's healthy competition among the fast bowlers in the squad, everyone's looking for games and wickets in the tri-series and in the lead up to the World Cup," he said.