Nehra scalped two batsmen in successive balls and added one more later in the second Twenty20 against England, which India won by five runs.
"Whether I'm playing 50 overs or T20 or if I'm bowling in the nets with a single stump to aim at, I've never felt short of match practice. It takes me only one game to get back into the groove," asserted the 37-year-old left-arm pacer.
"I will play domestic cricket in the coming months - 50 overs and T20 and there's IPL too for two months. I believe if you've been playing so much for so long, match practice is very important whether you're a bowler or batsman.
"People like me or MS Dhoni who are not playing Test cricket right now, we have to play domestic games and ultimately experience does matter," he said.
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"Regarding age, unfortunately in India, if you keep performing well then people will praise you. And if the team loses couple of matches, then people won't criticize the rest of the 15 but will say Ashish Nehra should be dropped. It doesn't make a difference to me but age is just a number.
"I know how hard it is to stay fit because I'm a fast bowler and I bowl in the beginning and end both. But I'm enjoying my game and till my body is fit, I'll keep trying and playing. I played the last game after 7-8 months but I didn't feel I was short of practice or anything. When you are playing day in and day out, you get better with time but I personally don't feel that rusty or anything," he said.
"When you are defending a score like 145, it is important to pick up a wicket up front, which we got in my over. It puts pressure on the batsman. With the wicket slow, if you take two-three wickets early then the batsman will be on the back-foot.
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Nehra said the key to bowling well at the death, for which he praised teammate and man-of-the-match Jasprit Bumrah, is to "keep backing yourself mentally".
"When I came they needed 32 off four overs, and I knew this has to be over where we have to pull it off. Luckily it happened that over went for five or six and Ben Stokes got out. We were back in the game, but my last over was fine till the last ball went for a six. Had I picked up a wicket, we would have had 15 to defend in the final over and Jasprit Bumrah's bowling is not easy to score. He still did the job."
"I was confident after (Jos) Buttler got out that Jasprit will do the job. I have been playing T20s with him for the last one year and he backs himself in the death. Bumrah's strength is bowling with the old ball - whether it's the slower ball or yorker. He's learning day by day and he will only get better from here.
"In the one-day series we saw 350 and 380 were scored but Bumrah still bowled five or at least three overs in the end. He will have to be mentally strong from here that in a match with 360 or 380 being scored, you will probably be hit for 75-odd runs if you bowl four overs in the end. His growth will be an asset in the coming time for Indian cricket."
"He may bowl a one-off over with the new ball whereas I bowl three overs up front because I know that the team wants me to strike early, especially while defending such a 130-140 types total. I need to pick wickets early in such games. If you don't do that, it's highly unlikely that you can come back in such games.
"On the other hand, Bumrah is an excellent bowler and his speciality is bowling at death. Just like Lasith Malinga - he was an asset with the old ball. Bumrah has a slightly awkward action so a new batsman can't really pick him easily. He has a good slower one and a yorker. Bumrah is a very important player in this team, whether it's ODIs or T20s.