When asked about the condition of his knee, Vidal told FIFA.com: "It's fine now. I'm pleased because I made a very quick recovery. I thought it was going to be a lot harder for me.
"Luckily, I made the team for the first match, and the 60 minutes I played is going to come in useful for the two matches coming up, which are both very tough."
Chile continue their World Cup campaign tonight when they face defending champions Spain.