There are no ranks in billiards. There are different tournaments that result in a player getting ranked from their play and win:loss ratios, so there is a ranking of players that changes regularly. The top ranked player, a temporary rank, is simply called the top ranked player.

NYU Medical Centre has many nationally ranked specialties, these include diabetes and cancer. They have 13 nationally ranked specialties which I will list below: They are ranked 30 in Cancer; They are ranked 14 in Cardiology & Heart Surgery; They are ranked 20 in Diabetes & Endocrinology; They are ranked 22 in Ear, Nose & Throat; They are ranked 37 in Gastroenterology; They are ranked 9 in Geriatrics; They are ranked 45 in Nephrology; They are ranked 8 in Neurology & Neurosurgery; They are ranked 6 in Orthopedics; They are ranked 35 in Pulmonology; They are ranked 8 in Rehabilitation They are ranked 7 in Rheumatology; And finally they are ranked 17 in Urology.

Ranked for what?

single-ranked

he is ranked 1st