March 28-April 1 – Swimming, Phillips 66 National Championships, Federal Way, Wash.
1 – Men's College basketball, NCAA Division I semifinals, Indianapolis.
1 – Auto racing, NASCAR Busch Series, Fort Worth, Texas
1 – Track and field, Bob Mathias Relays, Fresno, Calif.
2 – Women's College basketball, NCAA Division I Championship game, Philadelphia.
2 – Auto racing, NASCAR Winston Cup, Primestar 500, Fort Worth, Texas.
2 – Motorcycle racing, Malaysian Grand Prix, Sepang, Malaysia.
3 – Men's College basketball, NCAA Division I Championship game, Indianapolis.
3-7 – Cycling, Tour of the Basque Country, various sites, Spain.
3-9 – Ice hockey, Women's World Championship (Pool A), various sites, Canada.
3-11 – Curling, World Championships, Glasgow, Scotland.
5-8 – Figure skating, World Synchronized Championships, Minneapolis.
5-8 – Track and field, Texas Relays, Austin, Texas.
6 – College ice hockey, NCAA Division I Championship semifinals, Providence, R.I.
6-9 – Men's golf, PGA Tour, Masters Tournament, Augusta, Ga.
6-9 – Auto racing, NHRA, Las Vegas Nationals.
6-9 – U.S. Olympic trials, canoe-kayak slalom, Ococee River, Tenn.
7-9 – Men's tennis, ATP event, Davis Cup, second round, various sites.
8 – College ice hockey, NCAA Division I Championship game, Providence, R.I.
8 – Auto racing, NASCAR Trucks, Martinsville, Va.
8 – Auto racing, NASCAR Busch Series, Nashville, Tenn.
8 – Horse racing, Grand National, Liverpool, England.
8-16 – U.S. Olympic trials, sailing (Europe, Finn, Laser, Star), San Francisco.
9 – Motorcycle racing, Japanese Grand Prix, Suzuka, Japan.
9 – Running, Paris Marathon.
9 – Auto racing, Formula I, San Marino GP, Imola.
9 – Auto racing, NASCAR Winston Cup, Goody's 500, Martinsville, Va.
9 – Auto racing, CART, Bosch Spark Plug Grand Prix, Nazareth, Pa.
9 – Pro hockey, NHL regular season ends.
10-13 – Synchronized swimming, Olympic Games qualifying event, Sydney, Australia.
10-16 – Men's tennis, ATP event, Casablanca, Morocco.
10-16 – Men's tennis, ATP event, Estoril, Portugal.
10-16 – Men's tennis, ATP event, Atlanta.
10-16 – Women's tennis, Bausch & Lomb Championships, Amelia Island, Fla.
10-16 – Women's tennis, Estoril Open, Oeiras, Portugal.
11-17 – Squash, World Doubles Championship (hardwall), Philadelphia.
12 – Pro hockey, NHL Stanley Cup playoffs begin.
12-21 – Ice hockey, Men's World Championships (Pool B), Katowice, Poland.
13-15 – Women's college gymnastics, NCAA Championships, Boise, Idaho.
13-16 – Men's golf, PGA Seniors' Championship, Palm Beach Gardens, Fla.
13-16 – Men's golf, PGA Tour, MCI Classic, Hilton Head Island, S.C.
13-16 – Men's golf, BUY.COM Tour, Shreveport (La.) Open.
13-16 – Women's golf, LPGA Tour, Longs Drug Challenge, Lincoln, Calif.
13-16 – Auto racing, NHRA, O'Reilley Nationals, Houston.
14-16 – Track and field, Mt. Sac Relays, Walnut, Calif.
15 – Auto racing, NASCAR Busch Series, Talladega, Ala.
15-16 – Pro football, NFL Draft, New York.
16 – Auto racing, NASCAR Winston Cup, Diehard 500, Talladega, Ala.
16 – Auto racing, CART, Toyota Grand Prix of Long Beach, Calif.
16 – Running, London Marathon.
16 – Running, Hamburg Marathon, Hamburg, Germany.
16 – Running, Rotterdam Marathon, Rotterdam, Netherlands.
16-20 – Women's bowling, PWBA event, Las Cruces, N.M.
17 – Running, Boston Marathon.
17 – Running, Boston Marathon.
17 – U.S. Olympic trials, triathlon, Sydney, Australia.
17-23 – Men's tennis, ATP event, Monte Carlo Open, Monaco.
17-23 – Women's tennis, Family Circle Cup, Hilton Head, S.C.
17-23 – Women's tennis, Budapest Open, Budapest, Hungary.
18-20 – Men's basketball, European Final Four club championship, Thessaloniki, Greece.
18-23 – Diving, U.S. Spring National Championships, Minneapolis.
19 – Pro Basketball, NBA regular season ends.
19-May 6 – U.S. Olympic trials, shooting, spring selection, Fort Benning, Ga.
20-23 – Men's golf, PGA Tour, Greater Greensboro (N.C.) Chrysler Classic.
20-23 – Men's golf, European PGA, Moroccan Open, Agadir, Morocco.
21-22 – Track and field, ACC Outdoor, Durham, N.C.
21-23 – Men's golf, PGA Senior Tour, Las Vegas Senior Classic
21-23 – Diving, FINA Grand Prix, Vienna, Austria.
22 – Auto racing, IRL, Las Vegas.
22 – Auto racing, NASCAR Trucks, Portland, Ore.
22 – Pro Basketball, NBA playoffs begin.
22 – Auto racing, Grand Am event, Phoenix.
22-30 – Water polo, Women's Olympic qualification tournament, Palermo, Italy.
23 – Auto racing, Formula I, British GP, Silverstone.
23-28 – Women's bowling, PWBA event, Mesa, Ariz.
24-30 – Men's tennis, ATP event, Barcelona, Spain.
24-30 – Men's tennis, ATP event, TBA.
24-30 – Women's tennis, DreamLand Classic, Cairo, Egypt.
25-29 – U.S. Olympic trials, cycling, track, Frisco, Texas.
27-29 – Wrestling, U.S. National Championhips, TBA
27-29 – Synchronized swimming, National Championships, Washington, D.C.
27-29 – Track and field, Penn Relays, Philadelphia.
27-30 – Men's golf, PGA Tour, Shell Houston Open, The Woodlands, Texas.
27-30 – Men's golf, BUY.COM Tour, South Carolina Classic, Florence, S.C.
27-30 – Men's golf, European PGA, Peugeot Open, TBA, Spain.
27-30 – Auto racing, NHRA, Virginia Nationals, Richmond, Va.
28-29 – U.S. Olympic trials, judo, Houston.
28-29 – Track and field, Drake Relays, Des Moines, Iowa.
28-30 – Men's golf, PGA Senior Tour, Bruno's Memorial Classic, Birmingham, Ala.
28-30 – Women's golf, LPGA Tour, Chick-fil-A Charity Championship, Stockbridge, Ga.
28-May 14 – Men's ice hockey, World Championships (Pool A), St. Petersburg, Russia.
29 – Auto racing, NASCAR Busch Series, Fontana, Calif.
29 – Track and field, IAAF, Meeting du Conseil General de Martinique, Fort de France, Martinique.
29-30 – Women's tennis, Fed Cup, World Group, first round; Bari, Italy: Italy, Spain, Croatia, Germany. Bratislava, Slovakia: Slovakia, Czech Republic, Switzerland, Austria. Moscow: Russia, France, Belgium, Australia.
30 – Auto racing, NASCAR Winston Cup, California 500, Fontana, Calif.
30 – Auto racing, CART, Telemar Rio 200, Rio de Janeiro, Brazil.
30 – Motorcycle racing, Spanish Grand Prix, Jerez de la Frontera, Spain.
30 – Triathlon, Olympic Distance Triathlon World Championships, Perth, Australia.
30-May 5 – Women's bowling, PWBA event, San Diego.