The former England centre-half is a vision of confidence ahead of the Three Lions' first World Cup semi-final in 28 years and he doesn't expect Gareth Southgate's side to encounter too much bother at the Luzhniki Stadium. In extra-time nobody wanted to be substituted.
Croatia are in the last four of the World Cup for the first time since 1998 and Vrsaljko says his team's run can not be compared to the Europa League success he enjoyed with Atletico Madrid last term.
"We don't really have much time to rest, after two 120 minutes battles, we are physically and emotionally exhausted", Vrsaljko told HNTV. This shows character and is what makes me proud.
"I could only dream to play for my country and to score one of the most important goals".
The Croatians overcame an even bigger demographic difference in the quarter-final, beating Russian Federation - a nation of around 145 million - on penalties.
She was photographed in various stages of despair as she watched her goalkeeper boyfriend slump to defeat against Croatia in Moscow's Luzhniki Stadium. But that wouldn't deter the Duke of Cambridge from supporting his team as they take on Croatia in Wednesday's semi-final.
He said: "They were the better team, that's all that happened".
Our physical performance coach has tried to keep refreshing the warm-ups for the players and keep them stimulated. "I told the players before the game there was no pressure - we have reached the semi-finals, enjoy your football and this was exactly what we did".
Tears and cries of joy, hugs and chants, firecrackers and flares - Croatia was on fire late Wednesday after their victory against England set up a first ever appearance in a World Cup final.
Very early on, oddsmakers had the French as the favorites in Sunday's World Cup final.
"We have been watching England in all their games".
"You have to give credit to Croatia and Dalic", Robson said.
"But when you've got to this point and we've played in the way we have, and as well as we did in the first half, then you want to take those opportunities in life".
Even leaving aside the fact they're into the final, the French have trailed in just one match so far.