Yes, 175 is an excellent score. A 210-bowling average is required to be considered a professional bowler. The amount of noted frames determines the strength of a score (strikes or spares). At least 1-2 spares or strikes are required to break 100. Three or more spares are needed to break 150. 172 is a good score. This means that it is not a great score, but it is better than a poor score (which would be 140 or less). A person with a 200-game average would normally expect to score around this rate. A low scoring game (below 140) might happen once in several outings, while a high scoring game (over 180) might happen only once or twice in many years. To determine how many games you need to win, simply divide the number of runs you need to make up by the number of an innings, then multiply this figure by five and add one. So, if you need to make 120 to win, you would need to score 180 runs in order to win. If your opponent scores fewer than this, you will win. The most runs you can score is 600. This is because no one else can score any more runs once you have crossed this mark. If you go past this mark, no one else can beat your record time either! A score of between 100 and 200 is called a "good match".