72 or 288 for the whole tournament
A score of one under par
The term "integer of three under par" typically refers to a score in golf. In this context, being "three under par" means a golfer has completed a course with a score that is three strokes less than the established par for that course. If par is, for example, 72, then three under par would be a score of 69.
Par for the hole.
The course is par 72, so the par for four rounds would be 288.
An Eagle.
4
Well it is ultimately the same thing. A usual professional golf tournament has 4 rounds. The running total score in relation to par is kept for each player and displayed on the leaderboard. Red is strokes under par, green is even and black is strokes over par. Although, you may be referring to score to par, as in for one day. Say Tiger Woods is 3 under today, level par for the tournament etc.
A "birdie" is not a specific score, it's one under whatever par for the hole is. If it's a par 3 hole, then a birdie is 2; if it's a par 5 hole, a birdie is 4.
It means the player shot 4 stokes under par. A par 72 course gives him/her a score of 68 for the round.
The score would change by increasing 6 strokes - like from -1 to +5. For instance, if the golf course was par 70, 69 would be one under and 75 would be 5 over par. Remember, in golf the lower the score the better. Making par for 18 holes is very difficult for most golfers. Berney Trembly
Every hole has a par rating - usually 3, 4 or 5. One under means one less than this. So on a par 4 hole a score of 3 is one under par. This is called a birdie.
An Eagle.