Westin Rio Mar Golf Course (Palmer; tel. 787/888-6000): A 45-minute drive from San Juan on the northeast coast, the 6,145-yard (5,618m) Rio Mar Golf Course is shorter than those at both Palmas del Mar and Dorado East. One avid golfer recommended it to "those whose games and egos have been bruised by the other two courses." Wind here can seriously influence the outcome of your game. The greens fees are a lot lower than those of its two major competitors.

Hyatt Resort at Dorado (Hyatt Dorado Beach Resort & Country Club; tel. 800/233-1234 or 787/796-1234): With 72 holes, Dorado has the highest concentration of golf on the island. Two courses-east and west-belong to the Hyatt. Dorado East is our favorite. Designed by Robert Trent Jones Sr., it was the site of the Senior PGA Tournament of Champions throughout the 1990s.

True tennis buffs head here, too. The Dorado courts are the best on the island, and both hotels sponsor tennis weeks and offer special tennis packages. The Hyatt Dorado Beach Resort & Country Club weighs in with seven Laykold courts, two of them lighted.

Wyndham El Conquistador Resort & Golden Door Spa (Las Croabas; tel. 800/468-5228 or 787/863-1000): This sprawling resort east of San Juan is one of the island's finest tennis retreats, with seven Har-Tru courts and a pro on hand to offer guidance and advice. If you don't have a partner, the hotel will find one for you. Only guests of the hotel are allowed to play here.

Palmas del Mar Country Club (Humacao; tel. 787/285-2256): Lying on the southeast coast on the grounds of a former coconut plantation, the Palmas del Mar resort boasts the second-leading course in Puerto Rico-a par-72, 6,803-yard (6,220m) layout designed by Gary Player. Crack golfers consider holes 11 through 15 the toughest 5 successive holes in the Caribbean.