England midfielder Owen Hargreaves says he is not worried about criticism over his inclusion in Sven-Goran Eriksson's squad and will continue to do his best for his country.
The Bayern Munich schemer came on as a second-half substitute in the 1-0 win over Paraguay, but drew heavy flak for his performance.
However, he told reporters ahead of the meeting with Trindad & Tobago: "I don't think I have to prove anything. I have achieved a lot in my 25 years.
"I've won the Champions League title and domestic titles and played over 40 games in the Champions League.
"In the biggest games I've always played my best games and the most important thing is belief in yourself and belief from the manager.
"You take confidence from games you've played and I have had great experiences up to now.
"It's very difficult when you come on to impress - you're just on there to hold on and get the result. I was very surprised there was any criticism at all.
"People who don't see me can be a bit sceptical and I can understand that, but I believe I can prove those people wrong."