Detailed Instructions: Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.
Q: I am looking for a word that describes a person described in the description of the title. An example of such a person would be a person who comfortably passes the (easier) qualifiers and gradually performs even better as opponents get tougher in the final stages of a tournament. The person does not necessarily relax when he knows he can easily win, but 'naturally' performs better as the stakes get higher.
A:
How about 'clutch (player)' per. Clutch performance in sports is the phenomenon of athletes under pressure, usually in the last minutes of a game, to summon strength, concentration and whatever else necessary to succeed, to perform well, and perhaps change the outcome of the game. It occurs in basketball, hockey, football, esports, and other sports. The opposite is 'choking': failing to perform as needed, when under pressure.