1 — Men's skiing, World Cup nordic combined, Nayoro, Japan.
1 — Snowboarding, World Cup, men's and women's half pipe, Park City, Utah.
1 — Track and field, IAAF Indoor Grand Prix II, Melbourne Track Classic, Australia.
1-4 — Men's golf, PGA, Doral-Ryder Open, Miami.
1-4 — Men's golf, European PGA, Dubai Desert Classic, United Arab Emirates.
2-3 — College wrestling, NAIA Championships, St. Charles, Mo.
2-3 — Men's and women's track and field, NAIA Indoor Championships, Johnson City, Tenn.
2-3 — College wrestling, NCAA Division III Championships, Waterloo, Iowa.
2-3 — Speedskating, U.S. Short Track Championships, Blaine, Maine.
2-3 — Track and field, U.S. Indoor Championships, Atlanta.
2-4 — Men's golf, PGA Senior, Toshiba Senior Classic, Newport Beach, Calif.
2-4 — Diving, FINA Grand Prix, Rostock, Germany.
2-4 — Speedskating, World Cup, Calgary, Alberta.
3 — Men's skiing, World Cup alpine, downhill, Kvitfjell, Norway.
3 — Men's skiing, World Cup nordic combined, Sapporo, Japan.
3 — Auto racing, NASCAR Busch, Sam's Town 300, Las Vegas.
3-4 — Ski jumping, World Cup, Oberstdorf, Germany.
4 — Men's skiing, World Cup alpine, super G, Kvitfjell, Norway.
4 — Cross-country skiing, World Cup, men's 15km freestyle and women's 15km freestyle, Kavgolovo, Russia.
4 — Running, Los Angeles Marathon.
4 — Snowboarding, World Cup, men's and women's parallel giant slalom, Park City, Utah.
4 — Auto racing, Formula I, Australia Grand Prix, Melbourne.
4 — Auto racing, NASCAR Trucks, Florida Dodge Dealers 400, Miami.
4 — Auto racing, NASCAR Winston Cup, Las Vegas 400.
4 — Auto racing, Grand Am, Nextel 250, Homestead, Fla.
4 — Running, IAAF World Cross Country, Cinque Mulinia, San Vittore Olona, Italy.
5-11 — Men's tennis, ATP, Franklin Templeton Classic, Scottsdale, Ariz.
5-11 — Men's tennis, ATP, Citrix Championships, Delray Beach, Calif.
6 — Baseball, Hall of Fame election announced by veteran's committee.
6-7 — Biathlon, World Cup, Lake Placid, N.Y.
7 — Men's and women's skiing, World Cup alpine, men's and women's downhill, Are, Sweden.
7 — Ski jumping, World Cup, Falun, Sweden.
7 — Cross-country skiing, World Cup, men's and women's sprint, Oslo, Norway.
7-10 — College skiing, men's and women's NCAA Championships, Middlebury, Vt.
7-13 — Men's college basketball NAIA Division II Championships, Point Lookout, Mo.
7-13 — Women's college basketball NAIA Division II Championships, Sioux City, Iowa.
8 — Men's and women's skiing, World Cup alpine, men's super G and women's super G, Are, Sweden.
8-10 — College rifle, men's and women's NCAA Championships, Columbus, Ohio.
8-10 — Women's college swimming and diving, NCAA Division III Championships, Buffalo, N.Y.
8-11 — Men's golf, PGA, Honda Classic, Coral Springs, Fla.
8-11 — Men's golf, BUY.com, Florida Classic, Gainesville.
8-11 — Men's golf, European PGA, Qatar Masters, Doha.
8-11 — Men's golf, Japanese Tour, Token Cup, Tado.
8-11 — Women's golf, LPGA, Welch's/Circle K Championship, Tucson, Ariz.
8-11 — Auto rally, Rally of Portugal.
8-11 — Diving, FINA World Cup, Moscow.
9 — Ski jumping, World Cup, Trondheim, Norway.
9 — Men's skiing, World Cup nordic combined 15km, Oslo, Norway.
9-10 — Men's and women's college track, NCAA Division I Indoor Championships, Fayetteville, Ark.
9-10 — Men's and women's college track, NCAA Division II Indoor Championships, Boston.
9-10 — Men's and women's college track, NCAA Division III Indoor Championships, Oshkosh, Ill.
9-10 — College wrestling, NCAA Division II Championships, Greeley, Colo.
9-11 — Freestyle skiing, World Cup, men's and women's moguls; men's and women's aerials; men's and women's dual moguls, Himos, Finland.
9-11 — Men's golf, PGA Senior, SBC Senior Classic, Los Angeles.
9-11 — Speedskating, World Single Distance Championships, Salt Lake City.
9-11 — Track and field, IAAF, World Indoor Championships, Lisbon, Portugal.
9-18 — Men's and women's tennis, ATP-WTA, Tennis Masters Series, Indian Wells, Calif.
10 — Cross-country skiing, World Cup, men's 50km classical and women's 30km classical, Oslo, Norway.
10 — Men's and women's skiing, World Cup alpine, men's giant slalom and women's slalom, Are, Sweden.
10 — Men's skiing, World Cup nordic combined 7.5 km, Oslo, Norway.
10 — Auto racing, CART, Monterey (Calif.) Grand Prix.
10 — Auto racing, NASCAR Busch, Aaron's 312, Hampton, Ga.
10-11 — Bobsled, World Cup, Lake Placid, N.Y.
11 — Men's and women's skiing, World Cup alpine, men's slalom and women's giant slalom, Are, Sweden.
11 — Motorcycle racing, World Superbike, Valencia, Spain.
11 — Ski jumping, World Cup, Oslo, Norway.
11 — Men's and women's college basketball, NCAA Division I tournament pairings announced.
11 — Auto racing, NASCAR Winston Cup, Cracker Barrel 500, Hampton, Ga.
11 — Running, China Coast Marathon, Hong Kong.
11-17 — Boxing, U.S. National Championships, Colorado Springs.
11-25 — Sumo wrestling, Spring Grand Sumo Tournament, Osaka, Japan.
12-18 — Men's tennis, ATP, Tennis Masters Series, Indian Wells, Calif.
13 — Pro hockey, NHL Trading deadline.
13-18 — Archery, World Indoor Championships, Castellanza, Italy.
14 — Snowboarding, World Cup, men's and women's parallel giant slalom, Ruka, Finland.
14 — Cross-country skiing, World Cup, men's 10km freestyle and women's 5km freestyle, Borlange, Sweden.
14 — Track and field, IAAF, Memorial Jose Ma Cagigal, Madrid, Spain.
14-17 — Men's and women's college swimming and diving, NCAA Division II Championships, Canton, Ohio.
14-17 — Figure skating, U.S. Synchronized Team Championships, Colorado Springs.
14-20 — Men's college basketball, NAIA Division I Championships, Tulsa, Okla.
14-20 — Women's college basketball, NAIA Division I Championships, Jackson, Tenn.
15 — Men's college basketball, NCAA Division I basketball tournament starts, various sites.
15-17 — Women's college swimming and diving, NCAA Division I Championships, East Meadow, N.Y.
15-17 — College wrestling, NCAA Division I Championships, Iowa City.
15-17 — Men's college swimming and diving, NCAA Division III Championships, Buffalo, N.Y.
15-18 — Men's golf, PGA, Bay Hill Invitational, Orlando, Fla.
15-18 — Men's golf, BUY.com, Monterrey Open, Mexico.
15-18 — Men's golf, European PGA, Turespana Masters, TBA, Spain.
15-18 — Women's golf, LPGA, Standard Register Ping, Phoenix.
15-18 — Men's golf, Japanese Tour, DyDo-Drinko Shizuoka Open, Hamaoka.
15-18 — Auto racing, NHRA, MAC Tools Gatornationals, Gainesville, Fla.
16 — Women's college basketball, NCAA Division I basketball tournament starts, various sites.
16-17 — Men's college basketball, NCAA Division III Championship, Salem, Va.
16-17 — College ice hockey, NCAA Division III Championships, TBA.
16-17 — Women's college basketball, NCAA Division III Championship, Danbury, Conn.
16-18 — Men's and women's skiing, U.S. Freestyle Championships, Waterville Valley, N.H.
16-18 — Biathlon, World Cup, Holmenkollen, Norway.
16-18 — Men's golf, PGA Senior, Siebel Classic, San Jose, Calif.
16-18 — Diving, FINA Grand Prix, Sheffield, England.
17 — Cross-country skiing, World Cup, men's 15km classical and women's 10km freestyle, Falun, Sweden.
17 — Auto racing, NASCAR Trucks, Bakersfield, Calif.
17 — Auto racing, NASCAR Busch, Suncom 200, Darlington, S.C.
17-18 — Ski jumping, World Cup, Planica, Slovenia.
18 — Cross-country skiing, World Cup, men's 4X10km relay and women's 10km classical, Falun, Sweden.
18 — Auto racing, Formula I, Malaysian Grand Prix, Kuala Lumpur.
18 — Auto racing, IRL event, Phoenix.
18 — Auto racing, NASCAR Winston Cup, Carolina Dodge Dealers 400, Darlington, S.C.
18-25 — Figure skating, World Championships, Vancouver, B.C.
19-April 1 — Men's and women's tennis, ATP-WTA, The Ericcson Open, Miami.
22-24 — Men's college swimming and diving, NCAA Division I Championships, College Station, Texas.
22-25 — Men's and women's skiing, U.S. Snowboard Championships, Sunday River, Maine.
22-25 — Men's and women's fencing, NCAA Championships, Kenosha, Wis.
22-25 — Men's golf, PGA, The Players Championship, Ponte Vedra Beach, Fla.
22-25 — Men's golf, European PGA, Madeira Island Open, Portugal.
22-25 — Women's golf, LPGA, Nabisco Championship, Rancho Mirage, Calif.
22-25 — Auto racing, NHRA, O'Reilley Nationals, Baytown, Texas.
22-25 — Auto rally, Spanish/Catalan Rally, various sites, Spain.
23 — Women's college ice hockey, NCAA Division I Championship semifinals, Minneapolis.
23 — Track and field, IAAF Grand Prix II, Engen Grand Prix, Pretoria, South Africa.
23-25 — Men's golf, PGA Senior, Emerald Coast Classic, Milton, Fla.
23-25 — Men's and women's skiing, U.S. Nordic Championships, Soldier Hollow, Utah.
23-28 — Men's and women's skiing, U.S. Alpine Championships, Big Mountain, Mont.
24 — Men's college basketball, NCAA Division II Championship, Bakersfield, Calif.
24 — Women's college basketball, NCAA Division II Championship, Rochester, Minn.
24 — Cross-country skiing, World Cup, women's 40km freestyle, Kuopio, Finland.
24 — Auto racing, NASCAR Busch, Cheez-It 250, Bristol, Tenn.
24 — Japanese baseball, Pacific League opens season.
24 — Horse racing, Dubai World Cup, United Arab Emirates.
24-25 — Speedskating, World Short Track Team Championships, Nobeyama, Japan.
24-25 — Running, IAAF, World Cross Country Championships, Dublin, Ireland.
24-26 — Women's college rowing, NCAA Championships, Gainesville, Fla.
25 — Cross-country skiing, World Cup, men's 60km freestyle, Kuopio, Finland.
25 — Auto racing, CART, Rio 200, Rio de Janeiro, Brazil.
25 — Auto racing, NASCAR Winston Cup, Food City 500, Bristol, Tenn.
25 — Women's college ice hockey, NCAA Division I Championship game, Minneapolis.
25 — Running, Rome Marathon.
25-29 — Pro football, NFL Annual Meeting, Palm Desert, Calif.
27-April 1 — Swimming, Phillips 66 National Championships, Austin, Texas.
29-31 — Synchronized swimming, U.S. Collegiate Championships, Newport News, Va.
29-April 1 — Men's golf, PGA, BellSouth Classic, Duluth, Ga.
29-April 1 — Men's golf, BUY.com, Louisiana Open, Broussard.
30 — Women's college basketball, NCAA Division I Championship semifinals, St. Louis.
30 — Track and field, IAAF, Engen Grand Prix Final, Cape Town, South Africa.
30 — Japanese baseball, Central League opens season.
30-April 1 — Men's golf, PGA Senior, Liberty Mutual Legends of Golf, St. Augustine, Fla.
30-April 1 — Speedskating, Short Track World Championships, Seoul, South Korea.
31 — Men's college basketball, NCAA Division I semifinals, Minneapolis.
31 — Auto racing, NASCAR Busch, Texas 300, Fort Worth.
31-April 8 — Curling, World Championships, Lausanne, Switzerland.